SERVICINGVIDEOSATELLITEDEVELOPMENTS ......KA2209 KA2210 KA2212 KA2213 125p 230p 80p 130p VOLTAGE...

NOVEMBER 1994 £2.20

LFuisionSERVICINGVIDEOSATELLITEDEVELOPMENTS

Practical guideto modernoscilloscope

Workshop Safety

ICC6 Scart SocketInterface

Satellite Faults

VCR CFnicCD Player

A REED BUSINESS PUBLICATION

I It t It I

41

TOSHIBA SERVICE BRIEFS1 2>

9 7003 47047

Make sure you selectthe best replacement components -

HR Transformers supplied by PHILEX

A comprehensive range of

Line Output Transformers

offering reliability & value.

BSI approved.Tested & manufactured in the EEC

FOR FURTHER INFORMATION & OTHER PRODUCTS

CONTACT:

PHILEX PLC

PHILEX HOUSE, 110 - 124 THE BROADWAY,

WEST HENDON, LONDON NW9 7BP.TEL: 081 202 1919 FAX: 081 202 0015

Vol. 45, No. 1

NOVEMBER 1994On Sale

October 19th

20 A Serviceman's Guide to Oscilloscopes,Part 1 David Botto

Today's oscilloscopes offer numerous features and excellentvalue for money. When choosing a scope for workshop use it'snecessary to be able to assess specifications and the usefulnessof various features. The aim of this article is to provide an outlineof oscilloscope operation and a guide to what to look for.

24 The Panasonic Z4 Chassis,Part 3 Ray Meadows

Operation of the microcontroller system, the timebases and theprotection circuitry.

33 Inside the Ferguson ICC6 Chassis,Part 2 Mark Paul

This time the signals side of the chassis, including the scan inter-facing system and the circuitry on the c.r.t. base panel. The care-fully -designed audio amplifier incorporates a fairly elaboratemuting system.

35 Trade News

36 CD Player Servicing Les AustinMainly this time models that use Philips mechanisms.

38 Satellite FaultsFault notes relating to satellite receivers.

40 Mains Isolation and Workshop SafetyEugene Trundle

Electrical safety is a vital consideration when planning thearrangement of the workshop. What to earth and what protectionto provide require care. There are two basic techniques, theearth -free zone system and the earthy -zone system with an addi-tonal isolating transformer. Practical guidance on how to imple-ment them.

Issue 529

49 Toshiba Service BriefsNotes on some fault conditions you may encounter and theTDA4601-type switch -mode power supply used in some CTVmodels.

52 Adding Extra LNBs Brian William EwanThe simplest way of obtaining more signals is to add an extraLNB to the dish system. How 10 go about it and what you canexpect to receive.

REGULAN FEA1 l R1.S

Camcorner 16

Help Wanted 27

Leader 13

Letters 53

Long-distance Television 46

Next Month in Television 15

Teletopics 19

Test Case 383 39

TV Fault Finding 42

VCR Clinic 28

What a Life' 14

The December issue will be published on November 16th.

COPYRIGHT© Reed Business Publishing Ltd., 1994 Copyright in alldrawings, photographs and articles published in Television isfully protected and reproduction or imitation in whole or inpart is expressly forbidden. All reasonable precautions aretaken by Television to ensure that the advice and data given toreaders are reliable. Vite-cannot however guarantee it and wecannot accept legal responsibility for it.

CORRESPONDENCEAll correspondence regarding advertisements should beaddressed to the Advertisement Manager, "Television",Quadrant House, The Quadrant, Sutton, Surrey SM2 5AS.Editorial correspondence should be addressed to "Television"Editorial Department, Reed Business Publishing, QuadrantHouse, The Quadrant, Sutton, Surrey SM2 5AS.

INDEXES AND BINDERSIndexes for Vols. 38 to 43 are available at £3.50 each fromVideo Interface Products Ltd., who can also supply a six -yearconsolidated index on computer disc. For further details seepage 39.Binders that hold twelve issues of Television are available for£5 each from Television Binders, 78 Whalley Road, Wilpshire;

Blackburn BB1 9LF. Make cheques payable to "TelevisionBinders".

SUBSCRIPTIONSAnnual subscriptions (inclusive of postage) are as follows :- UK -£26.00 Eire/Europe (airmail) - £37.00 Rest of the World (airmail) -£48.00. Send orders with payment to Quadrant SubscriptionServices Ltd., Oakfield House, Perrymount Road, Haywards Heath,Sussex, RH16 3DH.

Subscription hotline for 24 -hour ordering with CreditCard telephone 0622 721666 quoting INJ.

NEWSTRADEDistributed by Marketforce (UK) Lid. 247 Tottenham CourtRoad, London W1P OAU 0171 261 5555

BACK NUMBERSSome back issues are available at £2.75 each from Television,Room L302, Quadrant House, The Quadrant, Sutton, SurreySM2 5AS. Make cheques/postal orders payable to ReedBusiness Publishing Ltd. See box on page 51.

ISSN 0032-647X

TELEVISION NOVEMBER 1994 1

GRANDATA LTDK.P. HOUSE, UNIT 15, POP IN COMMERCIAL CENTRE, SOUTHWAY,

WEMBLEY, MIDDLESEX, ENGLAND HA9 OHBTelephone: 081-900 2329 Fax: 081-903 6126

TRANSISTORS / LINEAR ICsPart Price Part Price Part Price Part Price Part Price Part Price Part Price Part Price Part Price Part PriceAAY32 9p 80246A 50p fiFY64 25p MJ 15004 3009 281613 24p 1210 115p 08841) 37p 6502A 360p AN7156 240p 8413108 350pAC107 40p 60265 45p BFY90 45p MJ2501 100p 281711 20p 40 1100 242430V 65CO2 930p AN7168 200p HA13412 6000AC125 30p 60267 45p BLY48 85p MJ2955 55p 281893 30p 50 130p 68880 43p 6522 280p 487178 1800 HA 13432 400pAC126 30p 8D269 45p BR100 14p MJ3000 100p 282102 50p 100 140p 24/630V 6800 210p AN7222 75p HA17524 250pAC127 30p 130278 50p 00103 37p MJ3001 100p 2822184 24p 11 250p 80830 43p 6802 220p AN7254 150p ICL7106 650pAC128K 40p 6D311 100p 88303 85p MJE29A 30p 282219 24p 120 1200 2A/800V 680 500p AN7256 250p IC L7660 240pAC141K 45p 00314 100p BSS74 33p MJE304 30p 282221 23p 14 700 200p 0032 43p 36808 500p AN7310 60p KA2102 150pAC176 22p 80315 150p BSX20 15p MJE340 25p 282222 23p IS 160p 2A/: 00V 5809 500p AN7311 90p KA2130 150pACY18 48p 00317 150p BT1004 70p MJE350 80p 282369 15p 24 250p 13034 43p 6810 150p AN7410 150p KA2206 150pACY19AD149AF12545139

48p60p50p30p

00331803328036160362

40p40p60960p

BT106BT10907119BT146

180p90p

100p99p

MJ E520MP8112MPS405MPS406

30p45p15p15p

282484 15p282646 40p282904 20p2512905 20p

24/400VBR36 44p241000V6862 80p

6818682168406845

380p130p290p200p

AY3- 1015AY3-1270AY3-1350AY3-8910

290p800p450p360p

KA2209KA2210KA2212KA2213

125p230p

80p130p

VOLTAGEREGULATORS

AF239 30p 613370 30p BTY79 140p MPSA13 15p 2N2906 18p 7805 25p 647200V 6850 90p 453-8912 400p KA2214 150pBB10513 18p BD371 30p BU105 80p MPSA20 15p 282907 18p 7806 25p 13864 72p 8085A 300p 84301 55p KA2261 100p0E32058 24p 80410 50p 80108 100p MPSA42 15p 283019 28p 7808 25p 642400V 8086 500p 84311 80p KA2263 100pBC107 8p 80433 28p 80109 80p MPSA43 15p 283053 18p 7812 25p 611251 150p 8088 480p 04313 60p KA2264 100p801013BC109

8pOp

0043480435

30p31p

BUM/BUl 11

90p100p

MPS470MPSA92 2015pp

283054 40p283055 38p

7815 25p7818 25p

254/100V811252 165p

81568224

300p240p

6433364401

80p60p

KA2284KA2401

100p150pBC109C 10p 00436 30p 80124 60p MPS493 20p 283055H 50p 7824 25p 25-4/200V 8226 240p 04402 50p KA2412 350p8C140 20p 130437 28p 00126 65p MR510 35p 283442 85p 7905 25p 80254 185p 8250 750p 134511 145p KA2912 125pBC141 20p B13438 36p BU180 100p MR856 36p 283702 90 7906 30p 254/400V 8251 200p 8A514 160p KA2914A 300pBC142 20p 60439 40p 80184 100p 0C28 350p 2N3703 9p 7908 30p 130256 200p 8253 160p 04516 150p LA1130 240pBC143 20p 80440 40p BU204 65p 0C29 250p 283704 9p 7912 30p 254/600V 8257 220p 04521 100p LA1150 150pBC147 8p B D441 40p 80205 70p 0035 350p 283705 9p 7915 30p 80258 240p 8271 3400p 84524 240p LA1185 150pBC149 8p 80533 50p 90206 100p 0036 250p 2N3706 Op 7918 30p 2EA/BOOV 8279 270p 64526 180p LA1201 75pBC159 Bp BD534 38p 00208 70p 0C45 50p 283707 9p 7924 30p 08351 185p 8283 400p 04527 95p LA1210 140pBC160 30p BD535 38p BU2084 75p 00200 180p 283710 12p 78105 249 35V/100V 8284 440p 6A532 100p LA1222 80p0C171 10p 00536 38p 8020841 200p 020088 100p 283711 12p mum 24p 80352 2000 8287 260p 84534 220p LA1230 130pBC172 10p 00537 405 BU208D 130p R20108 100p 283771 8513 78L12 24p 35V/200V 8288 650p 04536 150p LA1364 200p8C177 14p 00538 40p BU209 90p 5200043 175p 283772 90p 78L15 '24p 89354 220p 8748 7000 BA546 160p LA1365 120pBC178 14p 60643 50p RU225 120p S2000AF 175p 2N3773 100p 7808 24p 35V/400V 8755 800p BA612 120p LA1368 220pBC179 14p 80645 50p BU226 120p 520554 175p 283799 18p 78L24 24p BR356 230p 8726 95p BA656 110p LA1385 170pBC182 7p 80647 50p 00312 90p 52055AF 200p 2N3819 29p 79L05 35p 35V/600V 8T28 110p BA658 350p LA2000 150pBC182L

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52530452800MTI P29

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65p

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100p

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40p40p60p

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4 TELEVISION NOVEMBER 1999

Model Price

REPLACEMENTModel Price

VIDEOModel Price

HEADSModel Price Model Price

AIWA VCR8103, VCRS I 07 2200p VR3833, 3912, 3913, 3914. 3963, 3975, NVM1, N). ' , , NVM5 42009 VHR1100, VHR1200 1500p

AV6O/AV77 1200p VIP300A MKII 19009 4913, VR93833 650p AG2100. A. '200 7009 VH81500, VHR2500 2100p

G700 11000 VR3986 20000 NV430 1100p VHR2700 2450p

FISHER0900 1500p VP3826, 3906. 3916. 3926, 3946, NV730, NV770 4 HEAD 1550P VHR7900 3000pFVHP420. 510. 520, 530, 615, 618, 620, 3948 1550p NV366 1850p

AKAI SHARP622, 710, 711, 715. 720, 721, 722, 730, 830, VR3927 14009 NV180. NV048 23009

VS105, 112, 115. 116, 125. 126. 201, 202. 905, 906, 908.910, 911. 915, 916. 918, VR3976 2300p NV788 2900p VC390, VC393, VC496 2750p205, 220, 240, 244. 245, 247, 248, 250. 301, 5000, 5001, 5005, 5050, 5075 1150p VR3977 2700p NV810, NV830 26009, vcasa 4200p303,304, VSP8, VSP82 13509VP7100, VS9300, VS9500, VS9800 650p

V8S3500. 7100.7500, 7600, 9900,VBR330 20000

V63984, VR3994 2300pVR3995. 3997 1800p

NV850, NV950 ' ' "'".'NV870. NV890. NV970 36009 VC779 18009

VP77, VP88. VP7100, VP7200, VS9700, VBS7000, VBS7100, V8S9000 2000p VR3917 1400p NVG33, NVG46, NVL23, NVL25. VC789. VC790 29009

VS9800 14009 FVHP500. 711, 715, 721, 722, 730, 830, V93730, VR3731, VR3749 2500p NVL28 20009 VC200. 220. 300, 381, 383, 384, 385, 386,

VS1, V52, VS3, VS4, VS5, VS10, 5100 FVH0720 11009 VR3918, V93919, VR3938 15009 NVG10. 11, 12, 14, 16, 120, NV250 280 387, 388, 471, 477, 481, 482, 483. 486.

VSP1 1350P FVHP725, 830, 980 2500p VR3520, 3701, 3719, 3720. 3721, 3759, 150,465 16509 3300. 8381, 9100, 9300. 9400, 9500 9600,

VS33, VS35, VS37, VS38, VS53, VS55. FVHP990 2700p 9720 2000p NVG18 2000p 9700 11009

VS66, VS765. VS767, VS768 2400p FVHP975 24009 VR3907. VR3938 1600p 4V020. 21. 22. 25, 28.200. NVD48 2200p VC582. 583. 651, 681, 750. 780. 781, 683.

VS512, VS515, VS516 2800p FVHD40, FVHD140, FVHP1, FVHP10, VR3968 700p NVG50, NVG300 26509 684 402, 500, 571. 573, 580,584,600.652,VS465 2600p FVIiP20 11509 NVG45 20009 693, 700 772. 7810. 782, 7822, 783,

J.V.C. & FERGUSONVS11,VS12 1400p NVH70 360" 8481 1100pFIDELITYVS6, VS8, VS9 2400p

VSX9 2500pH62200, 3300, 3320, 3330, 3350, 3360.3660, 3750, 3860, 4100.3292, 8900, 8901,

NV688 2400081V600 16009 40.6000, 6200, 6300, 7300, 7700, 7750.

1-105200, VCR600, VCR6100, V8900,VSF600, VSF650 36009 V69100 15000 8902, 8903, 8906, 8922, 8928, 3V01. 3V06. AG6800, AH6810 26009 8000, 8300 18000

VS155, VS165 25000 VCR100 11000 3V22 6000 4G6100, AG6200.AG6300 28009 VC793 3000p

VS20, 22.24, 25.26, 27.422, 426, 427, VTR1000 11000 HR3660, 7600. 7610. 7650. 7700,1410110. NVG7, NVG9, NV230 12009 VC473, 785.786 2200p

VSF10, VSP9 1400p 111, 120, 121.220. 225. HRS100, 8904, NV780 2800p VC699, VCA501. VC4602 2800p

GOLDSTARVSR9 15009 8923, 8924, 8925.8929. 8935. 8941, 8943. 914015, NVG400 2600p VC585, VC685 2000p

VS109. VS603, VS606. VS607 25009 8000 3HSSD13 . 19009 8944. 3V16. 3V23, 3V24. 3V31, 3V35, NVM7, NVMC20 3800p VCSOET 3900p

VS75 2500p GV H51 GVH122, VCP4000, VCP4100, 3V36, 3V38, 3439, 3V49 625p N,VF70 5200p VFH815* 2800p

VCP4200 13000 1391600, H80140, 141, 142, 143, 150, 152,ALBA Pi EC. SIEMENSGHV1232, 1233, 1241, 1242, 1243. 1244, 156, 157, 158, 160, 5101. HRS10, 8947,VCR40130, VCR5000, VCR6000 16509 1245, 1246, 1290, 1291, 1295. 1296. 1891. 89413, 3V42, 3V44, 3V45., 3V46, 3V47, 149011. 9012, 9013E, 9014E, 90140. 9015. FM350, FM352. FM355, 9M361 , F M362,

AMSTRAD8210,8215, GVHP1240, 1241, 1247, 1248,VCP400, VCP4130, 4300, 4301, 4305,

3V52, 3V54, 3V55, 3V56, 3V57 1250p1480154, 170, 171. 210, 211,.217, 320. 321,

9016.901A. 9024, 9033, 9034, 9041, 9053.9E54. 9055. 9063, 9065.9066, 906.

w36.3 1300p

VCR4500.VCR5.200 40.99000,4306,4310, 4311, 4315, 4316, 4320, 4321, 350, 521, 522, 525, 526, 527:550, 8950, DA1000, 1600 1300p FM364 13509

TVR1 . 11009 4326 13009 8951.3V64, 3V55, F010, FV11, FV20. 149114, 914C, 9154, 9164, 917, 9110, FM391, FM392, FM461 18009

VCR7000 11009 1400p 9120 2400p FM394. FM464 2800p

VCR6000, 6100, 6200, 8600, 8602, 8700, O.E.C.FV21, FV261490565.1480566, 3V48 24500 PV0,600, 740, 744, 754. 763E, 764, M/2300. FM462. FM561 1600p

008900, 8904, TVR4 12009 4000H, 4001H, 400214 1200p 1460725, HR0755, 3V43, 3V53 31509 2400. 760, 794, 770, 774 1650p FM468 2450p

IVR2, TVR3. VCR4600, VCR4600 MI(11, V4001H. V4004 12009 8930.8931, 8933, 8940, 3V29. 3V30 700p N380, N381, N830, N831, N832, N833, FM484, FM485, FM602, FM604, FM622.VCR4700 11509 V400514 15009 8945 2400p NE134, N835. N836 7009 FM624 18009

AUTHENTICF4850 8009 GRANADA

0.51. 0S2 16000

3V00, 8902.8903, 8909, 8912.8922 1000pFV31 15000FV37, FV43H, HRD860 3500p

8261. AH1 (for model 0X3000(, DX4000.149610 3000P91835 3150p

FM585 1425pF14600 1900p

AMA VHSAHI 11000 8R7000E. 8R70005 2800p 149.152,149530. 0X200034°.,.,421.,). SONY

ATVI 800p VHSAH3 2400pVHSAN3 8009

HR7200, 7300, 7350.2650, BR6200 70091499455 2000p

VCP1 ''"`PVC2300, 241)0. 740, 744, 760, 764 14009

DSR-19R IF OR SL -T 9ME) 31009

BAIRD VHSAY3 12009 HRD520 14000 95E000 35009 DSR-21R (FOR SLC 8-C9) 28009DSR-35R (FOR C20, C30. C40,

8900, 8901, 8902, 8903, 8906, 8922.8928 65op

VHSBH1,'VHSCH1 21009VHSBP1 850p

HRD300, 400. 580, 600, 620.650 23009HR4100 10009 NOADMENDE SLF1UB. SLF1E) 2 PIN SLC24PS,

8904, 8923, 8924, 8925, 8929,8935, 8943. VHSBY3 26000 1490750, HR0830 3300p 460 9460. V100. 140, 200, 250, 304, 341. SLC33E, SLC44PS, SLF3OPF, SLF6OPS,

8944 6509 VHSD52 16009 HRD250. HRD257 27000 450, 550 700p SLK85, SLT2OME, SLT3OME 1500p

8909, 8912 800p VHSEH2 1600P 3V32, 8942, 1492655 2300p V10-31. 1005, 1015, 1025, 1035. 1041,, DSR-43R (FOR SLC7 RANGE, 515000.

8930, 8931, 8933, 8940 800p VHSEY1, VHSEY2 14009 1160180. 190, 230, 610, 3V59, FV12L, 1055. 1065, 1105, 2005 12509.

S15100. 513000) 1 PIN SLC6E,

8942 23009 VHSFG2, VHSFG4 1300p FV208, 26.30, 32.33, VC1411.. 2450p V110. V333 '1"°9 S136E5, SL37E 1300p

8945 20009 VHFS1, VHSFS2 13009 HRD370, 1499430, 1490470, 3V58, V10,, 102. 103, 112, 141. 142, 200, 30..B.n.... SL3000, 8000. 8080, SLC5E,

8947, 8948 160098950 17009VC141L 3000p

VHSTJ1, VHSTJ2, VHSTJ3, VHSWJ3,VHSYJ2 7000VHSVH4, 4145000.7, 4145X147,

P113H 23009HRD530. HRD700, FV14T 3100p

GRC1, GRC2, 3V41 20009

301, 302, 350, 500, 3005V12C6, V1215, V1235, V1245

1 4 07 Tp.

V131253450p

SLT7ME 1600pSLV201. 202 2000p

VH582 70009 VHSVH2 1600P HRD330, 337, 440, 637, 641, 660. 1/38C 2300p SLK95. SLT5OME 29009

VHSW.11. VHSXJ3 700P HRFC100, FV44L 21009 V501 V503, V5005 31509 SLV373V8 2600p

BLAUPUNKTGRAETZ KENWOOD ORION TOSHIBA

RTV100, 203, 202. 211. 214, 222, 224,RTX100, 200 800p 4312, 4605,4905, 4912, 4913, P4833, KV901. KV903, KV905 850, VH3, V1-1555, VH660, VH700. VH844, V63 1500p

R1V301, RTX250, RTV333 800p TR4605, TR4812, 794905, 794912. KV917 24509 VH9CO. V111000 (ALL MODELS) I 'OOPVH1, 11424 'OOP

V9680 34009

RTV306, 307, 309, 311, 315, 316, 520,707 16500

TR4913, TR4914, TR4943 65094935, 4943, 4963, 4985, 4993. TR4833,

V8600, V8700 3000pV21. V31, V33, V50, V51, V53,LOGIK

974310, 3114, 312, 317, 319, 320 11009R1V324, RTV325 15509RTV328 18509

194935, TR4985, TR4993 65094920, 4927. 4930 170094946, 164906, 164916 16009

06960 1500p

VR950 14009PHILIPSVR6460, VR6520. 64V660, VR6420 7.25pVR67114 HEAD 18009

V9600 14509V55, V57 7009V71, V73, V74, V75. V77, V80, V81, V82.

LOEWERTV424 3500p 1134994 23009 6920, V96440 2E00,

910434. R1V440 3900p 1R4995 3300p 0C410. 0C420. 0C440 24009 R26441. VR6540, VR6541, VR6640, 083, V84, V85, V86. V87 12009

RTX260. RTX720, RTV330 2300p 0050. 0055, 0060, 0065 1500p VR6642 13309 V80. V93 14509

RTV454, RTV740 5000p GRUNDIGV5470, V5480 1300p

R7V478 3700p VS410, 450. 460, 503, 505, 510, 520. 521, LUXOR RANK13V6900AS 18*0°

V600 2350p

RTV520, RTV530 18009 530,546 16009 9225, 9256 1800pN83084, RV300, RV310, RV320, R0330

V880MS 2600p

RTV535, RTV560, 974570 2000p BARCELONA, MV5400, 440, 500, 600, 9245, 9251, 9254 1225p v7000 3700p

RTV635, RTV660, RTV670, RTV730 3000p 5E5100, 6100, 6110, 9100, TVR4500, 4510, 9270, 9271, 9273 18009 RV340, RV350. RV380 790p 45000 V5090 25009

CR1000, CR1200. CR1600 46509 5510, VS400, 440, 500. 505. 510, 518. 600. 9272, 928217 27001,REDSON V9680 2900p0.918004100p

610321, 974322 17009610.5180, 1/56190, 700, 900 14009MADRID, 6E5140, VS540, VS5480 30009

9252 2500p928017, 928077, 928097, 929107, MR100 17013p V3000, V301, V305, V309G 2550p

461,063 17009SABARTV338 28009 AAVS550, 620, VS550. 620, 630, 640, 790 928117 ...,..r,,.."°°P V110. V120, V130, V140, V210.

RTV348 27009 930,940 24009 9253 ---".",,,., 2410, 2470. 2820 14009 V220 18009R1V404, R1V414 3000pRTV640 3000p

V5120 2300pV5680 46009

9281 '''''"""9284, 9295, VR3701, VR3721 VR3731.VR3761 21009

4410, 4320 245006410, 6470 23009 TRIUMPH

RTV750, RTV800, RTV900 35009 VS160, VS740 4400p 8410, 01960313 31569 VR9500, VR9501, VR9525 11009RTV810 44009 VS170 46009 0.496087, VR600. 66007, 6008. 6009,RT1/910 4500p MVS660, 5E6160, VERONA, VS660. MATSUI 7006, 7C07 125 "

VS6690 35009 VX500E, 800A, 8104, 820, 80A. 7708, PVR6063. 6070, 8070, VR2000. 6000, 6013,TELEFUNKEN

BOSCH BAUER MVS710. 720, 910. 5E7120, 9120, VS710 7738 1200p 6012, 7030, 9010 6009 A890 27009

VR1150 1000P 720, 800.810, 910. 920 1700p VCRL3, VX730, VX750 1450pVHR7000, VR51205 15009 A920. VR1970, 2920. 2925. 2930. 410,

VRP20 10000 VX735, VX755. VX990 15009 4961X34,6005, 6011, 6013. 6011. 6020, 7921, 7926, 7931, 7970. 970 1250P

HINARIVXL2, 3, 4, 20, 35 11509VRP25 10009

VRP30 33509

VX735A, VX765, VX860 17509VX6I30 11009 6022. 60.43, 6024, 7004. 7011, 7014, 7720.

7730, 80 , 1, 8014 7009VR400, 410, 450, 510. 519, 520. 529, 540.610, 620, 640, 920. 1920 7000

CANONVR 1 0 10009VR30A, V9308. VR30E, VR404 3350p

VXL5, V2014 1300pVXL6 1500pVXL7 2200pVXL8, 9, 10, 11, 90, VCR34H.

MITSUBISHIHS303, HS304, HS320. HS700 0,n,

'S.."'HS306. HS318, H5710 16000

VR6018, V67018 24509496028 23000V67016 20000

4930, 932, 935, 1/62931, 2935.2941, 39354935, 4940. 4942, 4945 5935, 7932 140004935, VR3945, VR3950, VR7959 20500

474200 1300p HS307 innn°145319 ---P

4940, VR1925, 1930, 1940. 1950, 2960,440, 449. 530, 535. 539. 549. 550. 630. 650DAEWOOD

SAISHO

912. VCR12. VCR30. VCR32, VCR50, HITACHI HS33O 26009VF1100. 695, 705, 805, 905, 1000. 1100.

12000, 925.930,925030.840.950 ' 7009

VCR52 18009 VT11, 14,15, 16, 30, 33, 34, 330. 340. 503, HS400 280091200, 1603VR3300X. VR3600X, VR3650. VR1980, VR7980, VR980 31509

VCP11 RAF 18009 640, 5030, 0TP10, 30 1000, HS349, HSE31, HSE32. HS831 24009 VR3800 1400p VR2915 1100p

DECCA8300

1000n

8400, 85008,0'',---'

VT7, VT17, VT18, VT19 22009VT35, VT38. VT39 24009VT100, 110, 111, 112, 113, 115. 118, 120.125 128 220 225 400 405 410 413 414

HS411 29000HH5S3E3830. HS830 20009

2200pHSE10, HSE11, HSE20 HSE21, HSE41,

VR3200, It R3500 14009VR2000. \ J13300, VR3600 1400p

492970, 497971, V9975 24509V67979 2300p

smAIRA THOMSON

DUAL 415. 418, 510. 518, 520. 525, 526, VTM625. HSB10, HS1320 22009 6500, 6600 1600P 7X8000, V309, 316. 320. 321. 323. 326,

EVR101 23009 626. 725, 726, 728 1400p HS300, HS301, HS302. 14S310,1550p

51/7300. 85/8200, SV8300, SV9200 15409 4100. 4200, 4300, VX3057, 3067, 30981,VR70, VR71, VR74, VR81. VR90, VT3000 8000 SV7400, 8400 16"0 3301, 3121%4107,411T . 650pVR91 6509 VT4000, 4200, 5000, 5500. 5600 11009 HS200 650P 5481 00 12009 7X8500, V318, 342, 343, 351, 352, 353,VR85, VR96 23009 VT77, 680. 6500. 6700, 6800. 7000, 8000. 145337, 915347 1500P

SAIRSUKM 4210, 4230, 4260 12509VR97 3300p 8030, 8040, 8100, 8300.8500, 8700, 9000, HSE12. HSE22, MX1 2200P

VR80, VR92 650p 9300, 9500, 9700, 9900 1000, HS411E2, 146411G2 29000 SVX301,1/8900, 910, VVT510, VT320. V333 1100p

0993 2450p VT8, 9, 56, 57, 570, 575, 576, 580, 585. HSB11, HSB21 2200P 5609 VX5,13. 511, 520, 616, 626. 627, 717, 1/340 1100p

588 3400, HSE50 3300P 614, 619. 6-.9, 710, 712. 720, 730. 970. 971. V357, VK309LP 2300p

EDISON 1/165 2400p 972, SV715. 717, SVX303, 305. V8510, V360, V5500 2450p

VC21317, 2133, 2135. 2140, 2830, 2930. VT130, 135, 138, 145, 250, 255. 258. 420, NATIONAL PANASONIC 520, 610. 616. 617, 619. 620, 626, 627, 629. V364. V4400 2000p

2932, 2934, 3122 650p 425, 426, 428, 430, 431, 435,438, 535, 536, NV300, 322, 333, 390, 2000, 2010, 3000. 710. 971, V 520. 616, 621, 626. 900, V368. V6000, V8540 3150p

VK2132, 042512 2300p VTL39 301, VTM630, 635, 636 20009 7000, 7500, 7800, 7850, 8170.8200, 8400. 910 13500 1/410. 510, 610, 630, 715, 4240 14009

VK2436, VK2340 6300 V152, V760, V761E, VT62E, VT63, VT64, 8600, 8610, 8620 6259 V8770, V1730, V1770, 448220, VX750, V430, 530, 4340 2450pVK2530, VK2532, VK2631, VK2541 16000 1/1640 1300, NV777, NV330 15009 VK770, VK0025 19000

1/K2632 1700p V1168, VT150, VT260, V149814 NV8050, NV8051 28009 VM1560, V h11561 310001/450 2300pVK300T.V1(3011,1/1(3021, VK3037,

442637 3050p HEAD) 2600p AG1000, 401050, NV260, NV280. NV400,SANYO VK308P 650p

VKH2545 2450p VT530 25009 NV470, NV480 16000

VKH2639, VKH2439 3300p VT522, VTM620, VTM522, VTM720. AG6010. AG6015 25009 VTC5000, 5400. 6000.6500, VPR5000. VM10, VM20 27009

VT114722, VTM822 10009 406840 2400P VTC1500, V'CM10, 11.20, 21, 25.

FUNAI VT660E 2600p NV100, NV200, NV370. NV380,NV630 7250

VTC2000, 5100, 5150. 5300. 5400, 5350.

ii Ell, 1100, V11.1090, 1 00,3,5000.' VCR4000, 4500, 4800, 5200, VCR5600.

5370, VTCNA10, VTCNX15, 20.30,VPR5800 1800p GRANDATA LTDM.M.V.0. NV145 3900P

6400.6600, V1, V25 11009 HV1000, 14V2000, HV3000 650, NVF65,NV08 NVH765 3200p VTC5500, 5560, 9100, 9300, 9350. 9355.

VCR4600, VCR5400, VCR5800 12009VIP2500A, 30004,

HV4000, HV7000, HV8000p NVF51 0200PNVG19 2300p

9455, 9500 19000VHR1110, VhIR1150, 01481300, VHR1700. Tel 081-900 232940.95480, 5843, 8007,

6000, 150 2000p I.T.T. NVJ30, NVHJ33. NVL20, NVL21, NVG30 VHR2300 1300p

VCR4530, VCR6000, VCR6100, VC66800,VCR6803 13009

V93605, 3905 3935 3943, 3954, 39583985, 3993, 4993 650p

31,40, 130 18000NVJ35. NVG46 2500p

VHR3200. 32'0, 3100, 3150, 3300. 3400.3310, VHRD530 15000 Fa x: 08 1- 903 6126


Model Price

PINCH ROLLERS/VCRModel Price Model Price

BELT KITSModel Price Model Price

AKAI VHS TJI, VHSTJ2, VHSTJ3 200p N.E.C. 0M556, FM558, FM560, FM562, FM564. FERGUSON.(S ' 0, VS9300, VS9500, VS9700, VS9800, VHSWJI, VHSWJ3, VHSXJ3 200p N830, 831. 832, 833, 895 2009 FM574, FM578 200p 3292. 3000, 3001, 3016, 3V22, 8900, 8901,VP:100, VP77 200p V800B3 200p PVC2300, 2400, 740, 744, 146, 760. 764, FM601, 603, 605, 607, 608, 617, 619. 620, 8904. 8906 1359061, VS2, VS3, VS4, VS5, VS6, VS8, VHSEH3, VHSE S2 200p 766 200p 621, 623, 625, 626, 628, 630, 632, 634, 636, 3023,8923, 8924.8929 656VS9 200p VHSF34 200p DX1000, 1600, 2000, 3000, N9012, 9013, 638, 639 200p 3029, 3030, 8930.8931, 8933, 8940 90pV5105, 112, 115, 116, 126, 205, 220, 240,244, 245, 247, 248, 250, 512, 515. 516,

VHSFP2 200p 9014, 9016, 9033, 9034, N9053, 9054,9055 9066 9110, 9120, 9510, 9520, 9530,

3031, 3032, 8941.8942 851/3035, 3036, 3V38, 3039, 3049, 8943,

VSX9 29999610ORUN13IG 200pSOLAVOXNCVR 1000, NCVR5000 2°°P

8944 85p3V42, 3043, 31(44, 3045, 3048, 3053,V5201, VS301, VS303, V5304, VS603,

VS606, VS607. VP58-P82 2009BARCELONA, MADRID, MVS500, 510,600, 620, 660, 710, 720, 910, 9105, 31(54, 3055, 3057,8945, 8947, 8948 659

31/43, 3044.3058.3065, 8950, 8951 5010.ORION SONY00125. VS155, V5165. VS220, VS240, 5E5110, 5140, 6100, 6110, 7120, 9100, VH I, VH2

2"...,"'"P SLC5, 6, 7. SL3000. 8000, 8080, 8200, FV11. FV12. FV13. FV14, FV20, FV1'VS250, VS512 200P 9120, TV84500, 4510, 5510, VERONA, VC150, 180, V53, 33. 200, 201. 205. 212, SLJ 10, SLT6ME, SLT7ME 200p FV22. FV26, FV32, CV141L 80;V°22,23.25.35.37,38.53.66.75.422. VS500, 505, 510, 520, 530. 540, 550, 600, 250, 254, 2E58, 300. 303, 312, VH404, 555,SLC9, 20, 24, 30, 33, 44, SLHF 100, SLFI FV3I R 1259425, 426, 427, 462, 465, 467, 485, 965. 967, 610, 620, 830, 640, VS650. 660 680, 700, 700, 704, 712, 770, 780, 844, 900, 1000, ,

11, 20, 25, 30, 60, 100, 200, SLF6OPS,FIDELITY

VSA77 200PVSF260, 261. 262, 265, 270. 274, 280, 290, 710, 720, 740, 790, 800, 810, 900, 910, 920,

930, VS940, 5180, 5480, 6190. 6690 200p2948. 3030, 3312, VHF2A, VP2948 200pCOM 8115000. 16000, HVO3, LVH50, SLF90E, SLHFI 50, 850, SLK88, 95,

SLT2OME, SLT30ME. SLT5OME 2006 HQS200. VCR600,4,0, 440, 450. 455, 480. 490, 497, 560,2009 MVS400, 440. 400, 410, 440, 441. 450, 456,

450 200pNEVH, NEVHM, NEVHML, TVP2306C,VCP, VH04, 30. 103. 300, 358, 360, 362, 8MC100 BMC200, BMC500 200,

SLV201, 202 301. 302, 401, 402. 801,VCR6100 1806VCR100 1609

AMSTRADY.; H4500. 4600, 4700, 5200, 6000, 6100,

VS120 200pVS150 200pVS180, 200, 220, 226, 262, 265, 267, 300,

400, 416, 512. VH530, 532, 535, 536. 600.630, 635, 640, 666, 730, 735, 744. 774, 790,800, 820, 850, 888, 893, 900, 930, 940, 942.

802 2,00p

SLV210, 270, 273, 275, 300, 353, 373, 410.41S 474, 656, 715, SLV757, 777 2000

0'61000 100p

F1NLUX8600.6602, 8603, 8604, 8700, 8704, 8714,8800. 8804, 9000, 9340.1308904, TVR I , 2, 310, 315. 320, 326, 345. 380 200p 974, 1012. 1040. 1050. 1060, 1070. 1100.

1120,1204,1440,1500 1660,1800 2004°SLV 255 200 pVR2020,V02005, 092010,

VR2025,3 4 200pVCR7000 2009 GOLDSTAR

GliV 51, 1221, 1232, 1240, 1241, 1242,1243, 1244, 1245. 1246, 8000, 8200, 8210,

2151, 2308. 2204, 2400, 2500, 2600, 2700,2960, 2970, 3050, 3060, 4000.4008, 4010,4012 4016. 4020, 4300, 5029 VP10, 200,,

220, 225, 245, VR821, 925, 1032, 2949,

TELEFUNKEN4920, 930, 932. 935, 940, 960, 980. 9913,1200, VR925, 930, 940, 950, 971, 975, 980,

VR2040 1060VR2008 160pV83009 140pAIWA

FISHER.0068, AV77 200p 8215 03HVP1240, 1241. 1247, 1248, 1290,

2969, 2957, 2966, 2979. 2989 VTV300, 1920, 1925,1930. 1940. 1950, 2920. 2925.0700. 0900 200p 1291, 1295, 1296, VCP4000, 4100, 4130,4200, 4300, 4301, 4305, 4306, 4310. 4311,3935,VXL20. 25, 30 200p 2930, 2931, 2935, 2941, 2960, 2970, 2671,3945 3950, 3965, 3975, 4935, 4940,

VBS7000 245pV8S9000 120pALBA

vc,530000 VCR4000 20094315. 4316, 4320, 4321, 4325. 4326 2009

PHILIPS 4942,4945, 4970, 6000.7921, 7926, 7929, 00115520, FVHP530, FVHP420 60pFVHP615, 618, 620, 622, 710,711,720,V 085000, V050000 2000 HINARI 056460, VR2020 ,,..,

2°"'7931, 7932, 7970. 7971, 7979, 7980 2009VR1935, VR2915 200p 721. 722. 725, 730. 840 1005

V2011, VXL5. VXL8, VXL7, VXL8, VXL9,VXL I 0, VXLI 1, VXL19 2009VXL2, VXL3 200P

VR2020, VR2021, 0112022, VR2023.VR2024 200pVR6711 2009VR6540 200p

VR1970, VR1980 200,VR400, 410, 440, 449, 450, 510, 619 540,549. 810,640 2n,.,

°°'

FVHP905, 906, 908, 910, 911.915, 916,918 1005086330, V8S7500, V(357600.VBS9900 1009

AUTHENTIC5850 200P

EILAUPUNKT VXL4, 0%420, VXL35 200F DV866, 586, VR702. 703, 6485, 6589, 6765, VR520. 529, 530, 535. 539. 550. 62C, 630,650, 920 200p 0853500 755

RV0100, 200, 202, 222, 224, 301, 306, 307, 6880, 6948HITACHI FUITSU309, 311, 312, 315, 318, 317, 319, 320, 328, VR445, V86442, VR6542. VR6843,

404, 414, 434, 444, 478, 707, RTX100 200p VT7, 11, 14, 16, 17.19, 33, 34, 35, 38, 39, VR6943 2009 THOMSON 50J60, 55750, 00)715, VGX720D 1600RTV2II, 214, 321, 322, 348, RTX250. 88, 330, 680, 6500, 6800, 5000, 5500. 7000. 00464, VR2220, 2300, 2324, 2330, 2334 SV1000, 108500, V320, 321, 323. 326, 342,FUNAI160 200, 8000, 8300, 0500. 9300, 9500, 9700. 2340, 2350, 2414, 2480. VR2485, 1486. 343, 351, 352. 353. 360. 364. 368. 410, 430,

670324. 325 200p 9900 200p 1489, 2490, 2498, 2840, 6462, 6463. 64E:4 450, 510, 520, 530, 540, 620. 630, 640. VI, V25. VCR4630. 4800. 5200.5403. 5600.R TV330, 454. 520, 530, 535, 560, 660, 670, VT8, 52, 57, 61, 62, 63, 64, 65, 85.85. 88, 6560, 6660. 6860, 6861, 6862. 6863 200p 4200, 4210, 4230, 4240, 4260, 4300, 4340, 6400, 6600. VIP3000, VIP5000 1605

1 /20, 730, 740, 800, 810, 900, 910, 920 200p 1X; 113185), 11 113, 114513, 11 ;45,.. , 11a, 112205. 212220, 212155, Ny0-12700204 VvR0261350700 20092005

4400, 5500, 5540, 6000, 85407X8000, V309, 316, 357, 309, 410, 411709

VC84530. 5840, 5843, 6800, 6803, 8007,8103, 015150, 6000 160p '

DAE1N000 250, 255, 258, 260, 400, 405, 410, 413, 414, VR6548, VR6648 200p 3801, 4100 200pVCR12, VCR32, VCR52 200p 415, 418, 420, 425, 426428, 430. 431, 435. PRESSURE ROLLER ASSEMBLY PS403 V333, V340 200p G.E.C.VCR30. VCR500 200 438, 450, 498, 510, 518, 520, 525, 526, 576,

580 585, 588, 840, VTD660, 865, VTF770,40205. OV186, 190, 286, 291, 292, 486,471, 562, 582, 571, 761, VR201, 202, 203,

VX300, 301, 302. 305, 306, 312, 3301 2009 4005 100004004 1000

DECCA 775, VTL30, VTLC50, VTM620V, TM625, 302, 303. 305, 6180, 6182, 8185, 6285, TOSHIBAGOLDSTAR0518300 200p 626, 630, 635, 636, 640, 645, 646, 720. 722, 6290, 6291, 6293. 6362, 6367, 6390, 6391, 0055.57, 61.63, 65, 66, 67, 71, 73. 74, 75,GHV1221, 1232, 1241, 1242, 1343.174'1,VRH849SDK (Pressure Rolle. Assembly( 725. 726, 728, VTM730. 731, 735, 736, 740. 6393. 6467. 6468, 6470, 6561, 6570. 6581, 77, 81, 83. 85, 86, 93, 94. 80, 90. 99 97. 1245,1246, 1247, 1248, 8210, 8215,PS403 40205 450p 745, 746, VT580, 85 2009 6670. 6676. 6760. 6761, 6762. 6870. 6970, 200, 202, 205, 207, 300. 309, 500. 509. VCP4100, VCP4130 80PVT3000 200p 6975, 86131, 63507, 68084, 71584, 72S68. 700 200p GHVI 290, 1291, 1295.1298. VCP4000,FERGUSON 9251331 450p 05470, V5480 2000 4700, 4309 4301, 4305, 4306, 4310, 4311,I.T.T.3000. 3V01, 3V16, 3V22, 3V23, 3V24.

V108, V109,1/199, V209, 0609 200p 4315, 4320, 4321, 4325, 4326 120pSANYO3792, 8900, 89018902, 8903, 8904, 8906. 063605, 3826, 3905, 3906. 3916, 3926. PRESSURE ROLLER ASSEMBLY - P5403GRANADA

8909, 8912.8928923, 9924, 8925, 3935, 3946, 3948, 3978, 3985, 3986. 3995. VHR 1100. 1150, 1200, 1300, 1500, 2100, 40205, V91 V95 450p8929 2009 3997, 6348 200p 2300. 2500, 2700 200p VHSAH1. VIESAH3 10093029, 3030, 3031, 3032, 31/52, 8930, 8931, VR3913, 3914, 3943, 3954, 3984, 3993, VTC5000, 5150, 6300, 5350, 5400, 5500. VHSVH4. VHSWHI, VHSXHI 60p8933, 8940, 8941. 8942 200p6000.6500, 9100, 9300, VICM10. 20, 11. LT KITSVCR BEL. VHS062 5093035. 3V313, 3V38, 3V39, 3V42, 3V43, VR3907 200p 21.31. 50, VPR5800 2009 VHS6H1, VHSCH1 15003044, 3045, 3V48, 3V49, 3053, 3V54, VR3908 200p VHR3100, 3300. 3310. 3400, 3700, 3800, AKAI VHSBPI 13593055, 3V56. 3057, 3058, 3059, 3V65. VR3912, VR3963, VRP3833 200p VHRD500, 700 200p 097100. VS9304. V59500. V9700, VHSAN3 1109FV10. FV11, FV12, FV14, 8943, 8944, 8945, VR3917, VR3833 VTC3000 200, 759800 120p VHSDS2 12598947, 8948 200p 2009

083927. 3929, 3968 ROLLER VHR4100, 4150. 4200, 4300. 4359 4770, VSI, VS2. VS4, VS5 1009 VHSAY3 12593V52 2009 (PRESSUREASSEMBLY) PS403-40205 5100, 5200, 5300. 5350. 5700, 7100, 7200, VS10 65p VHSBY3 10098950, 8951, FV1061, 116, 1310, 141, 208. 450pSVR3799, V93520, 3701, 7500, 7530, 7540, 7800, 8100, 8200, 8250, V509, V0105, 112, 115, 116, 205. 220.24 VHSEYI, VHSEY2 70p21R. 260, 316, 321, 416, FV421, 500, 51R, 3719, 3720,

8500, VHRD4400, 4410, 4500, 4600, 4810, 244, 245, 247, 248, VS250, 612, 515, VHSCCI 10013521, VC141l. 2009r v441_, FV48T, FV43H 200P

3721, 3730, 3731, 3749, 3759, VR376121309 4710, 4890, 6700, VHR S700 200,, 516 3009

VS22, VS23, VS25, VS35, VS37, VS38.VHSDPI, VHSFV2VHFTJI VHSTJ2

SOp1505VR3918. 3919. 3958, 3998 2009

VR670, V6680, VR681 2009093927. VR3977 2005V0482, V8580. 05581, VR.582 200p

VCR 100 200pVS33.0055.0066 ...

1....7°VS4, V56°"',PVS477 1.°P

VHSTJ3 659VHSWJ1, VHSWJ2 1209VHSXJ3 85pVHSFJ2 140E

FISHER'0 4'420, 520,530

2.1"PSHARPVC200, 381. 384, 385, 386, 388, 390, 393,I VHP615, 618, 620. 622, 710, 711, 715,

716, 720, 721, 722, )25. 730.030,040, 20095 089905. 906, 908, 910, 911, 915, 916.918, 970, 975, 980, 990, 5000, 5009 5050,

VR9720 2009 800. 2300, 3300, 6000, 6200, 7300, 7700,7750 8300 9100 9300 9500 200,VC300, 387, 402, 471, 473, 477, 461, 482.

VHSFS1, VHSFS2 130pVHSFG1, VHSFG4, VHS563 180,AMA

4.1(66 1259J.V.C.5075, 5100 200,086339 0853500, 7000, 7500, 7600.

2H2R024/00. 3300, 3330, 3360, 3660. 4100.p

483. 486, 488, 496, 500, 571, 573, 581, 582583, 584, 585, 8481. VC5F3, VC5W20E,

4V77 14096700 160p

GRUNDIOMVS400, MVS440, VS400, 410, 440, 441.450.456, 460 55p9000, 9900 200,

5VH0250. 270, 370, 20000, FVH P3, 210,1062650, 7200, 7300, 7350, 7600, 7610,7650 7655 2909),

VCA1031 2009VC600, 651, 681. 682. 684. 685, 693. 699,

6900 180p00180, 200, 220. 226, 262,265. 267,2040800,0850, 0880,1600, 2000, 2080.250, 300, 310, F05132095 200p 410110, 111, 120, 121. 140, 150. 157. 158, 700, 772, 750, 779, 780, 761, 782, ALBA2200,2280, MV5200RC 900180 225 157 455 565 566 725 755 VC782MK2, 783. 785, 786, 787, 793. 800. VCR40000 1309 V5150 1605,FIDELJTY HRP50 200p 7810, 7822, VC172, VC6F3, VC6V3,

VCAI 00, 102, 104, 131, 140, 170, 202, 203,VCR5000. VCR6000 'MP V5319 VS315, VS320, VS326, V5340,1400200, VCR100, 600, 6100 200p

V I R100 200p860520, 640, 550, 680, 600, 620, 637, 641,650, 660, 830, 860 960. HRS5800 200p 211, 234, VCA303, 501, 602, 5011, AMSTRAD

VS345, VS380 859

HINARI40E/170. 180, 210. 230, 300, 320. 321, 330. VCD801, 802, 851, 852, 881, 882, VCM73, 106123. VC 64600, VCR4700.FUJITSU 337, 350. 370, 400, 430, 440, 441, 470, 500, VCT73 2000 VCR5200 140p VX1.1 889H5760. VX716, V07200 200p 530 700. 750, 950, 8605000, 5500, VC220 200P VCR7000 8081 V XL , 00(8, VXL9. VXLI 0 18099000 200pHRS10 200p

VCA10, 300, 60, 103, 105, 106. 211, 244.505, 605, 615. 1031, VCD806, 810, 815, VCR6000, 6100.13600.8602, 8603, 8604,

6700, 8704, 8714, 8800, 8804, 9000 9340.VX L4 V01-35 74pVOL' VXL6 1606

FUNAI01, V2, VCR4000, 4500.4530, 4540, 4600 VCH80, 865, 910, VCS1000, VCT310, 410 D08900. 008904 TVR4 160, 0013 V0120 909

LOGIN4800, 5200, 5400. 5600, 5800, 5840. 5843. 610, VC41314, 5313 200p

AUTHENTIC HITACHI6000, 6400 6600. 6600, 6803, 8007 8103. VR965 00SAISHOVHL3, V51000. V02000, VR2500.

VIP150, 3000. 5000, 6000 200p0I91000, VIP1400 2009

6850 1209'' ' 14 I I '3 ,i, 34 35, 38 39 88, 165,

7.,,,909LUXOR

9245, 9251 200 0031300 200 pBLAUPUNKT 075000. V15600 1205VT7000, VT9000, VT8300, VT8500 00pG.E.C.

V4004 7008252, 8253, 8256, 6285 2009254 200p SAL°1"

SV6500, SC6600 200p

511/100 200pRTV200. 810222, ITTV224 90p

V1680, VT6500, VT6800, VT9300. V19500,079700. V19900 009

GRANADA 9255 200p9270, 9271. 9273, 9274 2009 SV7300, SV8200, SVE1300, SV9200, 810202, RTX200 1505

RTV322, RTV248 100,8152, VT57, VT61, 0162, 15563. I/164,VT65. VT85, 0186,1/T640 1209VHSAH I, 3, VHSVH4, VHSWH1, VHSXH1, 9272, 928017. 928077, 928097, 928217. SC9300 200p 010306, 307, 309, 310. 311.312, 328, 414. VT3000 1101/VHSYH2 200p 929017, 929117, 929317 200, SV7400, 8400, 8420, 8500, 8520.8550. 434.444, 707 135p VT100,110.111,113, 115,118. 120,126,VHSAN3, VHSBP1, VHSVN1. 9201, 9283. 9284. 9292, 9295. 063701, 8600. 8620, 8700, 8710, 8720, 8800. 8830,

1110211, R10214 140, 128. 139 135. 138, 145.150. 163, 175, 220VHSVN2 200p 3721, 3731, 3761, 37812°09

9500, 9600, 9810 200p 010324, 810325 225 250 256 258 260 105130 1309VHSAY3, VHSX42 2009 5V8000, SV8100 200p RTV315. R10316, RTV319,11TV320I.T.T.VHSBHI, VHSCH I, VHSF51. VHSFS2,

VHSE H2, VHSEK3 20"SV601, SV800, SV900, SV901, SV6910.SV9800. 009900 7000

9-9v3.0 %,-°°RW301.910333, 1410338, RTV404,

MATSUI0X850 003605, 003905. 063935, 063954.VHSBY3. VHSCCI 2009

VHSDS2, VHSXN2 200920°F SV6700, 508710, 508750, 009700 2000

5V6000, 6900, 8820, 8850, 8870 8910815424

"''., ''083985 900VR3913, VR3914 709MITSUBISHIVHSDP I, VHSFP2 (Pressure Roller 8920. 8970 200p VP3826. VR3906, VR3916. VR3926,

Assembly) PS403-40205 4509 H5200, HS300, HS301, HS302. HS303, BONDSTEC 053946, 003948. VR3976, 063986.SAMSUNGVHSEY1, VHSEY2. VHSFY2 2009 145304, HS310. HS320, HS330. 81100 1106 003995, VR3997. VR6948 655

VHSFG2, VHSFG3, VHSFG4, HS700 200p SV716, 717, 08510. 520, 610, 616,617. 81300, 0T310 17013 V03927, VR3977 65pV HSFH6 200, HS306, HS307, 015318, I-15319, HS337, 619, 620, 626. 627. 629, 900, S11910, 1/1510, 81350 140p 053993, VITI3994 755VHSFJ2, VHSFJ4 200, 485338. HS347, HS349, HS400, HS410, 620, 611, 616, 621, 626. 900, 910, VX510,

8750 /so, VR3963VR3912

6501300VHSF63. V6XAS1 2001, HS411. HS412, HS421. H5713, 45810, 20,

30. HSE10, 20.30. 70 2009HSE 11. 015E12, 45521, HSE22, HSE31,HSE 32 HSE41 HSE51, HSE52 200p

520, 616, 817, 619, 626. 627, 629 200pSVX301, 303. 305, 307, 319, 322, 08710,770. 971, 8220, 8225, V1730, 1790. 18220.16225, 00710. 712, 720, 730, 750 770790, 825, 970, 971, 972. 8220 2005

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,°'3781 904/VR3908 180pSANSUI DAEWOOD

688. 777, 788, 3321, A06010. 6015, 6100, SVR5030 200, VCR12, VC632. VCR52 110P VR3918. V53919. VR3958. 063998 115p

PAGES 00,23

6400, 6800 200 0NV62 0,0, 250. 26 280, 370, 380, 430, 431,

SVR7010 2009 VCRNDAP 1509VCR 300150, VCR503130, VCR5ODFD. J.V.C.

SIEMEN433, 450, 460, 466, 470, 480, 630. 650, 730. VCR500FP 1705 H53300, 183330 4113360, 483660,

FOR MORE770. 780, 810, 830, 850. 870, 890, 2000,2910, 3000. 7000, 7200, 7800, 8050, 8150.8200, 8300. 8400, 8600, 8610, 8620.

FM350, FM352. FM355 200pFM361, FM362. FM363, FM364 2013pFM391, FM392, FM394, FM461, FM462,

DECCAV08300 9op

1-184100

5167350.51117600,14117610, 867650.

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6810, 511.0470 200pFM484, FM485 2005FM585, FM 01. FM604, FM622, FM624 DUAL 4040110. 501)111,1160120, H00121,

11613225 90pNVG9, NVG120 2009AG6840, NVH65, 75, NVJ30, NVL20. 23,

FM627 200,FM600 2009

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11130140, 150, 157, 158, 160.250. 257. 455,

BARGAINS 25. 28, NVG300, NVF86, NVF70. NV5S1.NVFS100, NVG19. 20, 25, 33, 40, SO 20083

FM204, 303, 304, 314. 325. 328, 374, 375376, 384, 386. 388. 404 424, 428.an 483,

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659

NVD48, NVD80, NVG21. 0/040 2009 489 2009 V596 851 750, 950, 6855000, 5500, 9000 65p


VCR BELT KITS / REPLACEMENT VIDEO LAMPSModel Price Model Price Model Price Model Price

HR0520. 600, 620, 637. 641, 650, 830 95p560540, 550. 580, 660, 860. 960.HRS5800 130p

KENINOODKV901KV903

70p90p

VR6010, VR9010VR6020, VR6022, VR6023, V96028VR7730VR6024VR6620, VR6540, VR6560VR6710, V98720. VR6735, VR8720VR6720, VR6730, VR6780, VR6775,VR8780

70p

75p75p90p

130p

160p

Models & Description Order Price

Code

UNIVERSAL VIDEO LAMP 9V VLO1 25p

SOmV (31)mm WIRES)

LOEWEOC 11, 0C400C410, 0C420, 0C440, 0C4600050. 0055. OC60, 0065, 0070,0075

95p130p

120p

SAISHOVR2000. VH L3VR3800

90P75p

PANASONIC VIDEO LAMPS VLO2 35p

LOGIKVR955 180p

LUXOR9245, 925192529253925492559256

130p140p140p100p130p130p

9270,9271,9273,9274 115p9272.9280 140p9261,9284,9285,9292,VR3701.37213731,3761,3781 95p

SALORASV6500 100pSV6600 150pSV8000 120pSV8100 60pSV8500, SV8520, SV9500 150pSV7400, SV8400, SV8420, SV8550 120pSV6700, SV8710, SV8750, SV9700 120pSV6800, 6900, 8810, 8820, 81370 89108920, 8970 95pSV8600, 8620, 8700, 8720, 8830, 9600,9810 130p

MATSUIVX850 75p

MITSUBISHIHS200 200pHS300, 301, 302. 307. 310. 337. 338, 347,349, 411, 012, 421, HSB10. 20.30, HSE 10,20.30, 70 1506H5303, HS304, H5306. HS307. HS330,HS400, HS700 150pHS318. 55319, HS410 130p

SAMSUNGSV716, 717, V1616. V1621, V1626. VX616.VX617, VX619, VX626. VX627, VX629 95pV9520, 510, 610. 616, 617. 619, 620, 626,627, 829, VI510, 520, 611. 616. 621. 628,VX510, 520 100V13900, VB910, V1900, V1910 110PX9130, 981, 982, SE9001, SV9001,SVX307, 319, 322. VE1770, 8220, 8225,V1770, 790, 8220.8225, VK8220. VPX31,VX750, VX790. 8220, 8225 135pSVX301, 303, 305, 5%7301, V8710, 971,V1730, 710, VX712, VX720, 730, 970, 971,972 230pVX9880 110p

N.E.C.5830, 5831, 5832. 5833 100pN895 110pPVC2300. PVC2400 180pDX1000, 1600, 2000. 3000. 59012, 9013.9014, 9016, 9033, 9034, 9053.9054, 9055.9066, 9110, 9120, 9510. 9520, 9530,9610 95p

NATIONAL PANASONICNV300, NV332, NV333, NV340,NV366 125pNV777, NV788 100pNV2000, NV2010, NV3000 130pNV7000, NV7200. NV7800 95pNV8600, NV8610, NV8620 145pNV230, 250. 280, 430, 431, 433, 450, 460,465. 470. 730, 770, 810,1370, 890, AG1000,1050 126pNV370, NV380, NV480, NV630, NV780NV830, NV850 100pNV600, NV688. AG6010, AG8015 110pNVG7 10, 12, 14. 15 18, 30, 130, 400,NVH 70 70p

SANYOVTC5000, 5150, 6000, 6500, VTCM10, 11,20, 21, 30, 31.50 7SpVTC5300, V7C5350, V7C5400,VPR5800 100pVTC5500 16pVTC9100, VTC9300 2206VTC11.00, 1300, 1500, 1100, 1150, 1200,1300. 1500 90pVHR2100, VHR2300, VHR2500,VHR2700 150pVHR3100, 3300. 3310, 3400, 3700, 3800.VHRD500, 700 110pVE184100, 4150, 4200,4300, 4350. 4770,5100, 5200, 5300, 5350, 5700, 7100, 7200,7500, 7530, 7540, 7800, 7810, 8100. 8200,8250, 8500, VHR 04400, 4410, 4500. 46004610, 4710, 4890, 6700 90p

NORDMENDEV100. V140 70pV1000M, 1005M, 1205, 1215, 1235, 1245,1305, 1403, 1405, V1500P, 1503. 1505K.1805K. 20000, 2405, 25005, 3000H,V3405H, 3105.4405H, 5000, 8005, 900,905 856V1001, 1005, 1015. 1025, 1035, 1041.1055, 1065, 1105, 3005, 304, 5005, 502.503 80pV101, V102, V103, V112, V141, V142.V301, V302 90pV110. V333 110pV1500T, V20008. V2000P, V400H 95pV250, V460. V9460. V20035542,V20035543 130pV300. V303, V380 75pV500 75p

SHARPVC200, 384, 365, 386, 388, 390. 93009500, 9700 100pVC7300, VC7700, VC7750, VC7800,VC8000 150pVC8300 150pVC300, 387. 471, 473. 481. 482. 483, 486488, 496, 8481 60pVC402, 500, 571, 573. 581, 582, 683, 584,585, VCSF3 30pVC800. 651, 882, 684, 685. 693, 783,VC6F3. VC6V3 70VC772, 779. 781. 782. 785, 788, 793, 800,7810. 7822, VCA100, VCA102, 104, 131,140, 170, 202, 203. 234, 501, 602, 5011,VCD806, 810, 815, VCH80, 865, 910,VC51000, VC7310, 410, VC71314,VCT 5312 115p

SIEMENSFM350, FM352, FM355FM484, FM485FM391, FM392, FM394, FM462FM461, FM464. FM468, FM561FM361, FM352. FM363. FM384

60p56p

100p150p120p

ORIONCOM 8115000, 16000, NEVHM, TVP230RC,900MVH1012, VH1030, 1040. 1060, 1070.1100, 1120, 1440, 1500, 1660, 1E100, 2150,2308. 2400. 2500. 2600, 2700, 2960, 300,358, 360, 362, 4010, 4015. 4016, 4020,4300,5010,5015 530 535 536 630 635640, 730, 735, VP220, 225. 245, VR1032.2966, 2980. 821. 925, VXL25 30p5E5311, VCP, VH1204. 2004, 2204, 3050.3060.4008. 400,4012, 412, 512, 600. 666,744, 774, 7905, 800, 820, 900, 974. VP200,VR2949, 2958, 2957, VXL20 90pVC150, 180, VH1000, 200, 201, 205, 212.250, 264, 288, 300, 303, 3030, 312, 33,3312, 404, 555, 700, 704. 708, 712, 770.780, 844, 900, VHF2, VH3 80pVH1 VH24 150p

SONYSLC6, SLJ10, SLT6ME 140pSLC5, SLC7, SLJ7, SLJ9 140pSLC9, SL8000. 518080, SLTSO 165p518000E, 61.80805, SL8200. SL8600 175pSLV255 95p

PHILIPSVR6460, VR6920 170pVR6540 100OV186, 286, 291. 292, 468, 471, 562, 571.761, VR201, 202, V1120DV1, 20DV2,20857, 25601, 25B02, 302, 303. 305,VR300V2, 351302, 351303, 63587, 71564,71566, 715138, V5865/32. 91562, 92583,VR6180, 6185, 6285.6290, 6291.6293,6367, 6390, 6391, 6393. 6467, 6468, 64706561, 6570. 6581, 6670, 6676.8760,VR68564, 86581, 92583 85pVR5442. VR6542 70pVR2025. VR2580 100pVR44589, 8114458920. VR4458922.1356843 100pVR6548, VR6648, V549513620VR6448695 110p

TELEFUNKENVR400, VR410, VR440, VR449 130pVR450, VI3540, VR549, VR840 70pVR520, VR529. VR620. VR920 70pVR530, VR535, VR539, VR550, VR630.1/111650 75pA940, VR1925, 1930. 1940, 1950, 2960,925, 930, 940, 950 90pA920, VR1970, 1980, 2920.2925, 2930.2970, 7921. 7926, 7931. 7970. 7971, 7980,970, 7981. 975, 980 65pA1200. 930. 932. 935. 980, 980. 990,VR2931. 2935. 2941, 2971, 3935, 3945,3950, 3965. 3975, 4935, 4940, 4942.4945,496. 5VR4970. 6000, 7932, 7959. 7979 65pVR1935 100pVF12915 90p

SABAV56420, 6435, 6440, 6460, 6480, 6620.6770, 7200, 8420. 2A10, 70, 21320, 3020.4A10, 4820.6A10, 6A70, 6820, 8820 65pVR6004, 6005, 6011, 6014, 7004, 7011,7014, 8011, 8014, 8511115 90pVR2000, VR6000, V66012. VR7000.VR7720, PVR6068 130pVR5005, VHR7000 135pV66006. 6007, 6008, 6009, 6015, 90169018, 6038, 7006. 7007, 7016, 7018.8006 65p

THOMSONSV1000 V410, 430, 450, 510, 520, 530,540, 620, 630, 640, 4240, SV5640 1154TX8000. V309, V357, VK411 75p7X8500, V342, 343, 351. 352, 353, 360,364, 368, 4210, 4230, 4260, 4400, 5500,6000, 8564 90pV320, V321, V323, V326, V4200,V4300 90pV333 100pV340 90pV4100, VK308, VK309, VK410 1206VK300, 1/1(301, 1/1(302, VK303, VK305,VK2301 135pVK312 65p

TOSHIBAV55, V57 MpV33, V31, V51, V53, V9600, V9680 115pV61, V63, V85, V66, V67 1509DV11013, DV80D, V71, 73, 74, 75, 81, 83, 85,86 120pV108, V109, 0199, V209, V609 1209V91G, V95G 115p

SHARP VIDEO LAMPS VL32 35p

HITACHI 5.381682 (VT63, VT64) VLO4

VIDEO LAMPS

135p

AIWA, AKAI, ALBA, AMSTRAD, VIES 150p

BLAUPUNKT, FERGUSON,FIDELITY, FISHER, FUJITSU,

FUNAI, G.E.C., GOLDSTAR,

GRANADA, GRUNDIG, HINARI,HITACHI, ITT, JVC (-1RD

SERIES), MATSUI, MITSUBISHI,NEC, ORION, NATIONAL,PHILIPS, SAISHO, SALORA,

SAMSUNG, SANYO, SHARP,SIEMEN, SONY, TELEFUNKEN,

THOMSON, TOSHIBA

AKAI, GRANADA (VHSTJ2), VLO1 25p

HITACHI Orr 3000), ITT (VR3912,

VRP38331, JVC (HR2200, 3300,

3330, 3660), MITSUBISHIIHS200), TELEFUNKEN (VR510,

519, 610), THOMSON (VK300,

305, 306, 3301), FERGUSON

(3V00, 16, 22, 24, 3292, 8900,

8901, 8902, 8903, 8909, 8912,

8922, 8925)

BLAUPUNKT, ORION (VH1, 2A), VLO2 40p

NATIONAL (NV200, 2010, 3000,

7000, 8150, 8200, 8400, 8600,

8610, 8620), SHARP (VC2300,

6000, 6200, 6300, 7300, 7700,

8000, 8300)

AKAI (VS10), GRANADA VL06 40p

(VHSXJ3), ITT (VR3993, 3994),

JVC (HR2650, 7600, 7610, 7650,

7655), TELE FUNKEN (VR530,535, 539, 550, 630, 650),

THOMSON (V309, 316, 357,

VK309, 411, TX8000),FERGUSON (3V31, 8941, 8942)

AUTHENTIC (NE50), DECCA VLO7

(VR8300), GRANADA (VHSTJ3,

WJ1, WJ31, ITT (VR3913, 3914,

3963), JVC (HT7200, 7300, 7350.

7700), TELEFUNKEN (VR450,

520, 529, 540, 549, 620, 640, 920,

1920), THOMSON )V4100,VK308, 309, 312, 410),

FERGUSON (3V23, 29, 30, 8923,

8924, 8929, 8930, 8931,8940)

40p

GRANADA (VHSAY3), SHARP VLO8

(VC200, 381, 384, 385, 386, 388,

390, 393, 9300, 9500, 9700)

60p

PANASONICMODE SWITCHES

NV2000, 2010, 7000, 7200, 7800 (VSS0048) £2.25

NV230, 260,430, 810, 870, 2300, 4300

(VSS0110) E2.25

NV830 (VSS0091) £2.10

NV300, 333, 340, 366, 688, 777, 778

(VSS0060) £3.75

NVG21, 25, NVH65, NVD80 (VSS017541 £2.00

ON/OFF MAINSWITCHES

GRUNDIGPART NO:USED ON:

PRICE: £3.00

29703. 29102C7500, C7500TT, C8500, C8502,C8712. C8714, C8894, M68-190,M68-190/99, M70-195, P40-345,ST66-1602, T55-340, V7722

ITTPART NJ:USED ON:

13/1074CP0200, 0211F, 0323, 0323/1,0341/14, 0345F, 0351/1, 0361,0361/1,9350. CT0500, 0500/1/T,0500T

PRICE: £3.25PART NO: LFC 005USED ON: CVC40°RICE: 13.00

MATSUrSAISHOUSED ON: MATSUI-2190, SAISHO-

PST213OTXPRICE: £3.50

PHIUPSUSED ON: K30, K35, K40. KT3, KT4PRICE: £1.00

SONYPART NO (POWER SWITCH + REMOTE

SWITCHUSED ON. KV1612 MK1, KV1612 MK2,

KV1614, '<V2052, KV2056,KV2062, XV2068, KV2212,KV2216, KV2252, KV2256,KV2704, KV2705, KV2706,KV2752PE3, KX2OPS1,KX2OPS2 KX27PS1

PRICE: £3.50PART NO:

USED ON:PRICE: £3.25PART NO:USED ON:

PRICE: £8.00PART NO:USED ON:

PRICE: £2.03PART NO:

USED ON:PRICE: £2.50PART NO:USED ON:

PRICE: £0.45PART NO:USED ON: VARIOUSPRICE: £0.50

(POWER SWITCH + REMOTESWITCH)KV2022, K V2024

(POWER SWITCH)KV1810 AWL KV1810 MK2,KV1820, KV1822, KV2000 MK1

)POWER SWITCH 26mm)KV1400, K"/1440, KV2040,KV2060

(POWER SWITCH 21mm +REMOTE SWITCH)KV2020

2 PIN (FUNCTION SWITCH)KV1612 MK1, KV1612 MK2,KV2052, K142056, KV2212,KV2215,10.12216, KV2252,KV2256, KV2704, KV2705,KV2706, KV275PE3, KV2756PE3

(4 PIN FUNCTION SWITCH)

REPLACEMENT IDLER TIRESAKA) M132773

MZ366960J2

GOLDSTAR VXP0521

HITACHI 686147168614826886971

JVC/ PU 489678FERGUSON PU 51380

PU 51402APU 55373PU 55374

NATIONAL VXP 0329PANASONIC VXP 0343

VXP 0344VXP 0401VXP 0433VXP 0463VXP 0521VXP 0581

SANYO 1430662115620

SHARP NIDLOO5GEZZNIDL0006GEZZNPLY0107GEZZ

IT0111'02

1T17

11031T041105

T06T07TO8T09T10

1111

T12113114115T16117T18

1119

I-1201T2111-22

PRICE22p EACH18p EACH FOR A PACK OF 5 FO:, EACH MODEL15p EACH FOR A PACK OF 10 FOR EACH MODEL

GRANDATA LTDTel: 081-900 2329Fax: 081-903 6126


VIDEO SERVICE KITSAMSTRADVCR700Contents

BELT SET PINCH ROLLER. REEL IDLER VIDEO LAMPOrder Code: 5641

FERGUSON di JVC3V42/43HRD455/HR0725ContentsBELT SET PINCH ROLLER

CLUTCH MECHANISM TENSIONBANDOrder Code: 5637

Economy Kit ContentsBELT SET PINCH ROLLEDSUPPLY CLUTCH TAKE UPCLUTCH

E17.50 Order Code: 5638 £9.50

E5.50

3V58/59164/65

HRD170/180/210/2301300/320/370/400/430/530/700/750HRS5000Contents

BELT SET. PINCH ROLLER. IDELR ARM. TENSION BANDOrder Code: 5644

3V29/3V30HR7200/7300/7350Contents

BELT SET. PINCH ROLLER. TENSION BAND IDLER TYRESOrder Code: SK05

3V35:36.38'39:49HRD110/111/120/225ContentsBELT SET PINCH ROLLER TENSION BAND IDLER TYRESOrder Code: SK04

3V31/3V42417600/7610/76503655ContentsBELT SET T/U REEL TABLETYRE, PINCH ROLLER REELIDERL. TN CLUTCH. T.0.1 IDLER.TENSION BAND VIDEO LAMPOrder Code: SK33 612.00

3V35./36/38/39/49HR0110/111 /120/121/225ContentsBELT SET. T/U REEL TABLETYRE. SUPPLY REEL TABLETYRE. PINCH ROLLER. TNCLUTCH. TM IDLER REELIDLER TENSION BANDOrder Code: SK35 E10.50

3V29/3V30HR7200/73003350Contents

BELT SET. TN REEL TABLETYRE SUPPLY REEL TABLETYRE PINCH ROLLER, REELIDLER TN CLUTCH T/U IDLER.TENSION BAND. VIDEO LAMPOrder Code: SK31 E11.00

VIDEO SERVICE KITS (Cont.) VIDEO SERVICE KITS (Cont.)VT11NT33ContentsBELT SET. PUP REEL TABLETYRE. SUPPLY REEL TABLETYRE PINCH ROLLER. FF/REWIDLER. CLUTCH PLATE.TENSION BANDOrder Code: 5645 £14.00

VT52:61262/63/64/65/85/86/640Content:BELT SET. PINCH ROLLER.FF/REW ARM CLUTCH PLATETENS'ON BANDOrder Code: SK49 04.00

Economy Kit ContentsBELT SET PINCH ROLLERFF/REW IDLER TYRE PUP REELTABLE TYRE. SUPPLY REELTABLE TYRE

Order Code: $046 L4.50

Economy Pat ContentsBELT SET PINCH ROLLERFF/REW IDLER

Order Code: SKSO £3.25

vT400,4054101114..15,18.42025:2528,430:31:35,48!4504981510/520/25/26/530/35/36/540/545/46/48/570175/576/580/8938Contents

TIMING BELT PINCH ROLLER. FF/REW ARM CLUTCH BASE.£8.50 TENSION BAND

Order Code: $652

£6.00

E5.50

Economy in ContentsBELT SET. T/U REEL TABLETYRE. PINCH ROLLER REELIDLER TYRE. T/U IDERL TYRENU CLUTCHOrder Code: $634 £5.50

Economy Kit ContentsBELT SET Till REEL TABLETYRE SUPPLY REEL TABLETYRE. PINCH ROLLER, T/UCLUTCH. T/U IDLER TYRE. REELIDLER TYRE

Order Code: SK36 £5.80

Economy Kit ContentsBELT SET T/U REEL IDLERTYRE SUPPLY REEL TABLETYRE. PINCH ROLLER. REELIDLE TYRE T/U IDLER TYRET/U CLUTCHOrder Code: SK32 £5.10

3V44/45/48/53/54/55/57HIRP50/FIRD140/150/158/160HRD250/257/565/566/755Contents Economy Kit ContentsBELT SET. PINCH ROLLER. BELT SET. PINCH ROLLERCLUTCH MECHANISM. TENSIONBANDOrder Code: SK39 £15.00 Order Code. SK40 £9.50

FISHERFVHP905/906/907/908/910:911/916/918Contents Economy Kit ContentsBELT SET. PINCH ROLLER. BELT SET. PINCH ROLLER.IDLER. GEAR IDLER UNIT IDLER TYRETENSION BANDOrder Code: SK57 £13.00 Order Code: $658 £5.00

FVHP615/618/620/622/71017111715/716/720/721/722/725/730/830340Contents Economy Kit ContentsBELT SET PINCH ROLLER. BELT SET PINCH ROLLER,IDLER. GEAR IDLER UNIT IDLER TYRETENSION BANDOrder Code: $688 E12.50 Order Code: SK69 £3.80

HITACHIVT11,1,11-33

Contents

BELT SET PINCH ROLLER. TENSION BAND IDLER TYRESOrder Cede: 56011 E13.00

UNIVERSAL TRIPLER

Price: £4.00 each

SEE OTHER PAGES

FOR MOREG RAN DATA BARGAINS

VT100/110:111,111115/118/120/125/1281130/135/138/145/150/175/220225/250/255/258/2130N1L30ContentsBELT SET PINCH ROLLER. FF/REW ARM. CLUTCH PLATETENSION BANDOrder Code SK51

PANASONICNV2000/NV2010ContentsBELT SET, PINCH ROLLERTENSION BAND. IDLER TYRESOrder Code: 5603 26.25

£11.50

£14.00

NV70001NV7200/NV7800ContentsBELT SET PINCH ROLLER.TENSION BAND IDLER TYRESOrder Code: 50182 £5.50

NV300/NV3301NV333/NV340/N1/366Contents

BELT SET. PINCH ROLLER. TENSION BAND. IDLER TYREOrder Code: $601

NV2000NV2010ContentsBELT SET PINCH ROLLER. FFIDLER. PLAY IDLER TENSIONBAND VIDEO LAMPOrder Code: $613

Economy Kit ContentsBELT SET PINCH ROLLER.IDLER TYRE. PULLEY TYRE

E8.00 Order Code: 5814

NV7000/NV7200/NV7800ContentsBELT SET PINCH ROLLER.IDLER UNIT PLAY IDLERTENSION BANDOrder Code: SIR 1 E8.50

E5.511

E4.50

Economy Kit ContentsBELT SET PINCH ROLLER.IDLER TYRE. CLUTCH TYRE

Order Code: 5012 E4.20

NV300/NIV330/NV333/NV340/NV366Contents Economy Kit ContentsBELT SET. PINCH ROLLER, BELT SET PINCH ROLLER.IDLER UNIT. PLAY IDLER IDLER TYRE. PLAY IDLERTENSION BAND TYREOrder Code: 51115 E7.50 Order Code: 51116 E4.00

NVG7NVG9NNG1ONVG11/NVG12/NVG14INVG15NVG16/NVG18/NVG30/NVG120/NVG130/NVG400/NVI165 (MAC)/AG1810 (PA()ContentsLOADING BELT. CAPSTANBELT PINCH ROLLER. IDLERTENSION BANDOrder Code: SK27 £8.00

NV332

ContentsBELT SET. PINCH ROLLERPLAY IDLER FF/REW IDLERTENSION BAND. FF/REW TYREOrder Code: 5629 £12.00

Economy Kit ContentsLOADING BELT CAPSTANBELT PINCH ROLLER. IDLERTYRE

Order Code: $628 £4.00

Economy Kit ContentsBELT SET PINCH ROLLER.PLAY IDLER TYRE. FF/REWIDLER TYREOrder Code: SK30 £5.10

NV2311250;2601280/430/450,460,470 650:810 090AG1200PK/AG1500PKContents Economy Kit ContentsBELT SET. PINCH ROLLER. BELT SET PINCH ROLLER.IDLER. TENSION BAND IDLER TYREOrder Code: $623 £6.00 Order Code: SK24 £3.50

NV600/NV688Contents

BELT SET. PINCH ROLLERPLAY IDLER FF/REW IDLERTENSION BANDOrder Code: 5625 £12.00

Economy Kit ContentsBELT SET PINCH ROLLER.PLAY IDLER TYRE FF/REWIDLER TYREOrder Code: S626 £8.00

NV73ONV770Contents Economy Kit ContentsSLOT IN BELT. LOADING BELT. SLOT IN BELT. LOADING BELT,PINCH ROLLER IDLER UNIT PINCH ROLLER IDLER TYRETENSION BANDOrder Code: $619 E6.50 Order Code: 5620 £4.00

Nv370iNV380/480/630/780/830/850/AG2100PWAG22000KContents Economy Kit ContentsBELT SET. PINCH ROLLER BELT SET PINCH ROLLERIDLER, TENSION BAND IDLER TYREOrder Code: SK21 E6.00 Order Code: SK22 £3.00

NV777NV788ContentsBELT SET. PINCH ROLLERIDLER UNIT. TENSION BANDOrder Code: 51117 £7.00

Economy Kit ContentsBELT SET. PINCH ROLLER.IDLER TYRE

Order Cede: V(10 E4.00

SHARPVC381

Contents Economy Kit ContentsBELT SET. PINCH ROLLER. BELT SET PINCH ROLLER.REEL IDLER TENSION BAND REEL IDLER TYREVIDEO LAMPOrder Code: 5647 £100 Order Code: SK411 £4.75

VC500NC571NC581NCE,A2NC583NC584NC5F3Contents FOAM, Mt ContentsBELT SET PINCH ROLLER. BELT SET. PINCH ROLLER.REEL IDLER TENSION BAND REEL IDLEROrder Cods 5660 £9.50 Order Code: SK61 £6.50

VC781NC7810/VC7822NC785NC786NC793NC800iVCA1 OONCA102/VCA104NCA202Contents Economy Int Content:BELT SET PINCH ROLLER. BELT SET. PINCH ROLLER.REEL DRIVE UNIT. TENSION REEL DRIVE UNIT TYREBANDOrder Code: SW DUO Order Cede: 51115 1625

VC68INC,682NC684NC685NC693NC699NC6F3NC700Contents Economy Kit ContentsBELT SET. PINCH ROLLER. BELT SET. PINCH ROLLERREEL DRIVE UNIT. TENSION REEL DRIVE UNIT TYREBANDOrder Code: SKR L13.50 Order Code: 5663 E8.00

FOR MORE DETAILS OF OVER 500TYPES OF SERVICE KITS...

PLEASE RING US!

BACKUP BATTERIESREPLACEMENT PHILIPS NI -CAD BACKUP BATTERIESReplaces Ferguson Part No:00E6-067.001, used on TX10, L2VReplaces Philips Part No's:138-10138,138-10313. 1.2V -90mAh 120pReplaces Philips Part No's:138-10229.2.4V - 90mAh 200p

REPLACEMENT FERGUSON NI -CAD BACKUPBATTERIESReplaces Ferguson Part Nos:00E6-066-001, 2.4VUsed on: 3V35, 3V56, 3V58, 3V65 200p

REPLACEMENTLINE OUTPUT

TRANSFORMERS

150P

Description Price OrderCode

HITACHI 2433752 1500p LOTO IORION 3714002 1500p LOTO?FIDELITY ZX300 1500p LOTO3FE TX100 90 DEG 1500p LOTO4SABA 490007182 1500p LOTOSFE TX90 WHITE 1650p LOTO6ITT 0307/37 EQ 1600p LOTO7BLAUPUNKT 210 1600p LOTOBGRUNDIG 2922010 1600p LOTO9ITT CVC800/1/3 1500p LOTTOITTD218/37 EQ 1600p LOT11NORMENDE 5255 1600p LOT12SABA 81000 200 1600p LOT'3SALORA T236 EQ 1650p LOTI4SABA 811-50-24 1600p LOT' 5SABA 770223500 1600p LOT16TELEFUNKEN AT1 1450p LOT 17TELEFUNKEN EQ 1400p LOT18SALORA FM02186 1600p LOT19NORMENDE 5255 1600p LOTTOITT CVC 1150/1 1500p LOT21ITT COMPACT 80 1500p LOT22FE TX100 GREEN 1450p L0T23HINARI CT4/5 5113 1500p LOT24SELECO 6320410 1600p LOT25BLAUPUNKT 8667 1600p LOT26ITT COMPACT 81 1450p LOT27ITT CT3326 MUL 1500p LOT28ITT 0066/37 EQ 1600p LOT29ITT 3546 EQ 1500p LOT30LUXOR 5810110 1600p LOT31SABA 849380920 1600p LOT32HITACHI 2434141 CP 1450p L0T33FE TX100 110 D 1700p 1.01-34HANTAREX 28021 1600p LOT35SHARP C3700 EQ 1600p L0T36HITACHI 2432981 CP 1500p LOT37FERGUSON 0003-508-002 1650p L0138Fits Chassis TX99 41cm + 51cmUsed On: 51K2, 5138, 51J7, 41H3,41H3, 41H2, 51K3PANASONIC TLF14567F 1850p L0T39Used On: TC2043, TC2243, TX300PANASONIC TLF14568F 1850p LOT40Used On: TX2231, TX2244PANASONIC TLF14584F 2350p LOT41Used On: TC2210, TC2160,TX1752, TX2112TX2112, TX2162, TXC22PANASONIC TLFI45B6F 2350p LOT42TC1851, TC2051, TC2061,TC2253, TC2263, TX5500HINARI 1600p LOT43Used On: CT15HITCHI 2434274 1400p LOT44CPT2174, CPT2176, CPT2178, 2434274We stock line output transformers for over 100 differentmodels. Please ring 081-9002329 for more information.


IDLERS & PULLEYS REPLACEMENTAKA(VS1.2, V54-5, VS15 FF -REW IDLER

1753, 6, 12, 56, 58, 59VS1.2, VS4-5, VS15 T -UP IDLERVS3, 6, 12, 59, 5919700 IDLER06125, 125 155, IDLER ASSYV5165, 240, 244, 246, 247, 248, 260, 512, 515, 516VS22, 38, 105, 112, 115, 116, 205, 220VP7100, VS9300 TOP IDLERVS9500, VS9800VP7100, VS9300 UNLOADINGV59500, V59900 IDLER067100, VS9300 REW IDLERVS9500. VS9800VP873 MIRV51, 3, 4, 9, 12 REEL TABLEVS15, 58VS23, 35, 37, 53, 56 CLUTCHVOW, 75. VSA77VS9700 FF IDLERVS9700 REW IDLER

AMSTRADVCR /000 IDLERTVR1, VCR4500 CLUTCHVCR4600, VC5200, VCR9000TVR1, VCR4500 GEAR HOLDERVCR4600, VCR5200, VCR900011/R1, VCR4600 REF CLUTCHVCR5200VCR6000, VCR6100 CLUTCHVCR4500, VCR9000 CLUTCHVCR4500, VCR4600 MOD VIII/CR4700MOD KIT TAPE CREASING FOR AMSTRADVCR4500, 4600, 4700

FERGUSON3000. 3V01, 3516 T -UP IDLER PU477523022. 3292, 8900, 8901, 8904, 90063V16, 3022 T -LIP IDLER PU492808303, 8909, 8912, 89223V23, 3V293530, REEL IDLER PU489673031, 3532, 3035, 8923, 8924,8929, 8930, 8931, 8940, 8941, 894237/23,3531 ROLLER ASSY PU4904263V29, 31/30, 31131 TOP IDLER 5140231/32, 3035, 3536, 3038, 3V39, 3V49, 8930, 8931, 8940. 8941, 83423V29, 3030, 31/31 TOP CLUTCH PV513803V32, 8938 8331, 8940, 8941, 89423035,3036, 3V38 REEL IDLER PU553743 \ /39, 31/49, 8943, 89443035, 3536, 3V38 T -UP CLUTCH PU553733539, 31/49, 0943, 89449/58, 3059, 3V64 IDLER ARM PU588459/65, FV10, FVI 1, P112 FV13, FV14, P720, FV21, FV22, FV26FV30. FV32, FV33, 8950,5014103V42, 3543 CLUTCH ASSY P13558223V43. 3044, 3545 CLUTCH ASSY PU576583548, 3053. 3054, 3V55, 31757, 8947,89683542, 3V43, 3544 TOP CLUTCH PU56043 143545, 3548, 3V53. 3054, 3V55, 3V56, 3157.8947, 89483V42, 3043, 3V44 SUPPORT CLUTCH PU560441-53545.3V48, 3V53, 3054, 3V55, 31/56, 3V57, 8947.99463500.3701, 3016 LOADING IDLER PU436813V22, 3292,13900, 8901, 8963,8903, 8804.8906, 89090612, 89223V00, 3001, 3016 REW IDLER PL146380

3292, 8900, 0801, 8904, 89063V16, 3022, 8902 IDLER P4136181

8909, 8912, 2622

FISHERNLIP420, 520,530, FFREW PULLEY HI638531LVHP615, 618.620 COMP. IDLER ASSY F11430420400300FVHP622, 710, 711, FVHP720, 721, 722, FVHP725, 730, 830FV5P840,905 906 FVHP908, 910,911, FVHP915, 916 918PJHP615, 618 620 GEAR IDLER ASSY 91430490400930FVHP622, 710, 711, F671020, 721,722FIF4P725. 730, 830, 80146840FVHP615, 618.620 REEL TUP ASSY 81430410400900F61 -1P662, 710, 711, FVHP720, 721, 722F I. FHP725, 730, 830, FVHP840FVHP905. 906, 908, GEAR IDLER ASSY FI1430490402400FVLIP910, 911. 915, FVHP916, 918FVHP975, 980, 990, IDLER 81436420400700FVHP999, 5000, 5005FVHP5050, 5078 51008088240, 55,140 REEL DRIVE ROLLER807D1, 10, 20F7/14)7975, 960, 990 CLUTCH F12430510404200FVH8420, 520, 530 IDLERFVHP420, 520,530 TAKE UP IDLERFV1-6990 LOADING GEAR4853500 REEL DRIVE PULLEY11353533 IDLERv0157600 REW IDLER

GOLDSTARL,FIV1121, 1232, 1240 CLUTCH GEAR 435038/100111241,1242, 1243, GHV1244, 1246 1246, GHV1247, 1248, 8000,00458700, 8210, 8215, GHVP51, VCP4100, 4130(3651221, 1232, 1240 IDLER0751241, 1242, 1243, 08171244, 1245, 1246, 0871247, 1248, 8000,LA58200. 8210, 8215, GHVP51, VCP4100, 4130

HINARIVX1.3, V/320 REEL IDLERV)(1.2 IDLER0X14, 0XI35 IDLERVXL4,168,35 CLUTCHVXD1,160.12, vxiis LIMITER POSTVXL3D, 107.135, VD/300W85, VXL6 CLUTCH1/046, VXL6 GEAR HOLDERVXL7,1/X1.8VXL9 CLUTCH

FIE166341

111)11-33, V76364 CLUTCH ASSY5714, 17, 19, 96, 57,86, 88, 34, 35.39, 03, 6162, 55.85, 330, 640, V116507126220, 100, 110 CLUTCH ASSY111,113, 116. 118,200126123, 135 135, 138, 145, 150, 175, 225, 250,255, 258, 264. VTL30VT13063-8300 7000 FF-REW IDLERVT135036700VT8000 6300,7000 PLAY IDLER0185008700VT8000-3300 7000 FF-REW PULLEYVT85038700579360-9500, 6500 FF-REW IDLERVT660. 6800.9700, 9900VT9300-9500. 6500 PLAY IDLERVT680, MOO, 9700VT 9393VT93009600. 9700 IDLER0T9900 6500, 690, 6800 IDLERVT11-33, 4763 -EA FF-REW IDLER0114, 165, 17, 19, 34, VT35, 38, 39, 52, 61, 620165,9290,88,330,646VT1000, 110, 111 113 FF-REW ARM 6886792VT1I5, 118,119, 20, 126, 128, 130, 135, 138. 145, 150VF175, 220, 225, 750, 255. 258, 260, VTL3071400.405, 410,413 FREW ARM 6897094VT414, 415.418420,425, 426, 426 430, 431, 435VT438, 450, 498, 510, 518, 520, 525. 526. 530, 535Vf536, 540, 545. 546. 548, 570, 575, 576. 580, 585VT588, 7/164025. 676, 630, 635, 636, 640, 646, 646, 715130, 85VT400, 405, 410, 413 CLUTCH 646F 689695100414,415,418.426,425,425.429,430,031.435418.42091438,450.498.61.3.518.520,525,526,530,526VT536, 540, 566, 546, 548, 570, 575, 576, 580, 58591588, 0198625, 626, 630. 635, 636, 640, 645, 646 VT580, 85VT3000 TOP IDLER (LARGE)1/16600 REW IDLER

M1327773

81527815

8V321979KT/30666612

PU47752

PU463131

PU46360

8V336667813347731

04373043

85321761W321762

150260150873

151284

153202

(TAPE CREASING)

40930009

6879515

688682461386972

6413663

6414221

6383531

8681471

68614826861481

6815056870436886971

VT680, 6500, 6800 F5 -86401.E 6861505 2340019700. 9900HITACHI TVOUTPUT MODULE HM 6251 15.50OUTPUT MODULE HM 6232 0/3

-NC149330, 3693, 4100 T-UP1DLER 0511. 6049280 6.50HR7200, 7600, 7650 T UPCLUTCH PU534626 220p897655, 7300 7350, 7610HR72010, 7300, 7350 REEL IDLER PU48967 175p897600, 7610, 7650, 7655, 7700HR7600, 7610, 7650 ROLLER ASSY PU490426 350pHR7655, 7700HR3300, 3060, 4100 TUP IDLER LFIG PU47752 E4 50

14117200. 7606 7650 T -UP IDLER PU514026 100p897655,1490110, FIR0111,1167300. 7350, 7610, L020120-121. 225HA 6110, HRD120-121. T -UP CLUTCH PU55373 150p880225.860111,HRD110. MR13120121. IDLER ARM PU5.6374-3-8 200p3160225,890111II90170, 180, 210, 230 IDLER ARM PU58465 6.25HRD320. 370, 400, 430, 470, 530, 700 750, 950, 3000HR55000, HRS5500790656, IIR0725 CLUTCH MECH PU558822 120063

7160140,156,157,156 CLUTCH MECH PU57658 1050pH60160, 250, 257. 565. 566.755, 89660H63300, FIR3330 REM( IDLER PU46380 500pH63660.1934100890140, 150, 157. 158 TAKE UP CLUTCH PU56043-1-4 2406H60160, 250, 257,455, 565, 566, 725, 755, HRP501490140, 150, 157, 158 TAKE UP CLUTCH PU560441-5 160p860160, 250. 257, 455, 565, 566, 725, 755, HPR50

MATS10VX730, 735, 750, 755, CLUTCH 85060000516(810, 620, 850.880. 990VX730, 735, 750, 755 LIMITED POST LEVERVX770, 800, 810, 880 ASSYVX99014800A. VX900 IDLER REELVX860A, 0X820 REEL UNIT CLUTCH

PATS 11151.185306,307. 318, 319, GEAR ASSY 522600201HS400. 410, 710445337. 335 347, 349 IDLER 5521301701H5411, 412, 421, H51310. H5820, HMO, H5E10, HSE20, HSE20, 85E30,LISE70H5306, 307, 318, 319 IDLER 641C34301H5400,410, 710885347,349,472 IDLER 522902002H5310,145820. HS830, HSE10, HSE20, H5E30, HSE70H5337, 338, 411, 421 IDLER 552801801115200 TAKE UP IDLER ()LARGE)HS200HS200HS306, 307, 318, 31985400, 410, 710HS306, 307, 318.319HS400, 410, 71085320115337, 338, 411, 421HS300, 301, 302, 310HS306, 307, 318, 31985400 410, 710145308, 307, 318. 319 GEAR WHEEL85400. 410 710

NECN83016831. 5832, 8833 TAKE UP CLUTCH14830, 8831, 5832.16833 TAKE UP IDLER0830, 5831, N832,15833 REEL IDLERN895 TAKE UP IDLER SMALLN911, N915, N916, N917 REEL DRIVE PULLEYN9012, 9013, 9014, 9016, 9033, 9034. 9054, 9055, 9066, 911059510, 9520, 9530, 9610

NATIONALNV322,165600. NV688, IDLER UNIT VXP0463NV777, 14011101, 86532, 606100, 6200, 6800, 6810NV300,10/333, NV340 IDLER ARM VX(.11997NV366NV300, NV330, NV333 IDLER UNIT VXP0401NV340, NI/366NV300,10/330, NV333 PLAY IDLER VXPI2433NV340, 147/366, 6018620NV300,817332, N11333 ACTION GEAR V0G0018NV340, NV366, NV600. NV777, NV788, NV2000, NV2010, 3000. 7000606010, AC36015NV333, 90/688, NV2000 LOADING GEAR VXP0325NV3000, NV7800NV303, NV332, 01/333 INTERMEDIATE GEAR VXG0017NV340, NV366, NV600, NV777, NV788, NV2000. NV2010, MOO, 703)AG(3010. AG8015NV330, NV333, NV340 CAM GEAR VXG0158NV366, NV777, NV788NV230, 81250, NV260 IDLER ARM VX9052151/280, 88/370. 07590, NV430, NV450.10/460, NV465, 06/470. NV4808V830,961650, NV730, N17130, NV810, NV830, NV850, 50/870NVG7, NVG9, NVG10, NVG11, NVG12, NVG 14, NVG15 NVG16, VG1851/030, NVG400, AG1000, AG1200, 1500, 1810, 2100,602200, 851465, 01/1470NV370, NV430, 80870, CAM GEAR W)G0200NV730, NV630, NV1350, NVGIO, NVG11, NVG18NV730, NV770 IDLER UNIT 5660581NV2000, 2010 3000 IDLER UNIT 0X6033157/2000.2010, 3000 IDLER UNIT 1560329NV2000. 1463000 CAM GEAR 17060069NV7000, 7200, 7800 IDLER UNIT 0X170344

NI17000, 723), 7800 CLUTCH 070P0343NV8150,8281 8300, IDLER UNIT V)(P024551/0400, 8663, 8610, 8620NV8200. 8400, 8600 PLAY IDLER 0X60243NV8610, 8620NV8620 CLUTCH VXF0343NV332,165600, NV688 IDLER 0X60488NVG20, NVG21, NGV25 PULLEY UNIT 0)(60767NVG40, NVG45NV230, NV250, NV280 WORM WHEEL VXP060457/430. NV450, 81/460, NV465, 8V650, NV730, NV770. 50810NV870, 19V890, 60100051/370, ILIV380, NV630 IDLER 0X60523601180,149100NV370 CLUTCH GEAR VXP0595NVG7, NVG11, NVG12 WORM WHEEL VXP0631NVG14. NVG15, NVG18, WW1 NVG110, NVG130, NVEL400, NV1470NV2000, 2010, 3000 LOADING GEM VOG063510/7000, 7200, 79CO. 8050N0230, 667250. NV370 LOADING GEAR VXP0520195430, NV450, NV460, NV630. 88/730, NV770, 811780. NV810NV830, NV890, NVG7, NVG10, NVG12, NVG15, NVG30. NVG120NG1/190, NVG400, PJVH70, 60100057/230, NV250, 90260 CLUTCH GEAR51/290, NV430, NV450, NV730, 81/770. NV810, NV870, NVEDONVG7, 00(7610, NVG11, NVG12, NVG14, NVG15, NVG18, FIVC936NCG120, 1600130. NVG400, NVH70, AG1000NV230, 511250. NV260 UMITER ROLLERNV2130, 05300, NV333, NV340, NV366, NV370. 811430, NV450, (61460NV465, NW30, NV650. 01/777, 91.580. 147//86 NV810, 10/830, 1167850,NV870, NV8010, NV2000, NV2010, 7200, 7800, NVG7, NVGIO, 017012,NVG14, NVG10. PO/G18, NVG30, NVG120, 880130, NVG400,1416170,601000

UNLOADING IDLERREWIND IDLERSUPPLY REEL 522600101DISKTAKE UP REEL 522600102DISKREEL DISK 522006371REEL DISK 522P00601PULLEY 522005201GEAR WHEEL 641071101

541071001

CROONMULTIPLE MODELS IDLER 9506200024MULTIPLE MODELS IDLER 860620000.5VC150, VC180, 0I71200 IDLER0H201, 014205, VH212, VH250, 51-1254, Y64286\64300, 0430.3, VH312VH404, V14555, VH700, VH704, V14708, VH712, VH780, VH844, VH900, WO,5153

SAISHOVR805, 7/R800, VR900 CLUTCHV711100, 1200, 1600,2500, 3200,3300VR3500, 3600, 3900 UMITER POST061100,1200, 1600, 2500, 3200, 3300, 3500, 3600. 3700VR605, VR800, VR900 Dan

4200

01.30

220p

0625

325p

E2 CO

1506

320604.50£400MOO0330

1320

EICO1500422501.50

E1.50

150p100p200p550p360p

0275

1560

60p

1275

00.60

62.00

00.65

£1.93

110p

0120

E2.5080p80p

01 0075p

3000808

80p

2571p300p400p

160p

300P

01000160

00_60

0150

02-50

41 50

280p420p110p

420p

4130

280p

VR2500, 3200, 3300 350. 3600, 3000VR705, VR805. 1/6935 IDLER

SANYOVHR1170, 1150, 1266 IDLER 143-0.6621 14730788134,0, 15,00VIC5000. 5150, 6000 FF-REW IDLER 1430-7411-20001VT6.6600. VTCM10, 1911, M20, 5421, M30, M31, M507/109100 7109300 IDLER 143.0-5511.01400910908 FF ROLLER ASSY 143-0-547100200VICM10, M11, 11120, 0421 REEL DRIVE PULLEY 143-0-662110350VICM30, M31, M50VH192100, 2300, 2500 IDLER 6130374896VHR27006TC5000. 5150, 6000 PULLEY 143-0.6621 01201VTC6500WC0810. M11, M20, 60.1 PULLEY 14346621-10350VTCM30,1931, M50VHR3100, 2300, 3310 REEL DRIVE 143-0-662115621VHR3400, 3700, 3800 ROLLERVHR0500. VHR073)VPR5809 VTC5300 LOADING ROLLER 1430 661 1-068000105400vroace FWD LIMITERVTC3000 IDLER

SHAM.IDLER ASSYIDLER

VC633 651.681, 682 IDLER ASSYVC684, 685, 603, 690, 700, 783, VC6FR. VC6V3007300, VC7760. 7750 PLAY IDLER KIT

68010005GE22511310006GEZ2NPLYV0107G922

NPLYV0041806101007

lisp

05.00

250p

9562006E500

300p

C5.10

05 50

3567

80p

f3 507506

110p110p

06 15

07 50

FAULT FINDING GUIDE BOOK

Video Recorders Edition 2

List more than 4000 faultsfor 43 different brands

Price £9 45p Only. No VATOrder Code: BOOK01

TELEVISIONEdition 4

Lists more than5,500 faults with 306 pagescovering 58 different brands

Price: 1150p only - no VAT Order Code: BOOK02

Satellite Repair Manual Edition 2

A comprehensive guide to receiverreviewing, featuring stock faults and

installation tips.

Price 1475p Only No VAT Postage 100pOrder Code: BOOK03

VIDEO HEAD CLEANING STICKS

Order Code: SP14

Price 17p each15P each pack of 10pcs13P each pack oi 25pcs

N' IDE( MAINTENANCE TOOLSrri,St fiAIletkeytipacked in

. ?7,,, :;,,, Price l25p2 3nirn 1 1.411

Sp,, lti,,11.. ,41,1711-,11r , Kit, 111.111L11....

Solder Mop 1.2mm x lOmet*es 300PTubed Silicon Grease 50 gram 200PTubed Heat Sink Compounc 25 gram 150P

UNIVERSAL HEAD EXTRACTOR TOOLHard tool designed for extracting hardto remove heads withouT damage to

either the head or the mounting assembly.Adjustable so as to suit various brandheads. PRICE -if

GRANDATA LTDTel: 081-900 2329Fax: 081-903 6126


REMOTE CONTROLSDescription Order Price Description Order Price

Code CodeGRUNDIG PHILIPS (continued)TP160E RC 107 900p RC38 RC 301 875pTP200, TP300 RC 380 800p KT3 TEXT RC 5301 800pTP400 RC 401 800p RC5352 RC 5352 800pTP590-600 RC 600 850p RC5375 RC 5375 850pTP390,TP610 RC 610 850p RC5 STANDARD RC 5534 850pTP621 RC 621 850p RC5901 RC 5901 850pTP630, TP650 RC 650 850p RC5903 RC 5903 800pTP660

TP661RC 660

RC 661

850p

850pSABAT6772 RC 1,49 900p

HITACHI TC319-320 RC 328 875pCLE800-CLE830 RC 140M 850p TC356 RC 356 875pA617402/655602 RC 192 875p TC358 RC 358 850pA512120/230 RC 900 800p TC360 RC 360 800pA514790 RC 901 850p TC365 RC 365 800pA5088470 RC 902 800pA518612 RC903 900p SALORA

SCL002 RC904 850p SERIES L RE 190 875p

C2096 RC 905 850p 86173 RC 882 850p

A511940 RC 906 800p SANYO655602H RC 907 850p RC218, RC222, RC228, RC238 RC 140M 850pITT JXGE RC 878 850pIFB13, 14, 15 RC 143 875p JXDE "RC 884 850pFS4 RC 148 850p VHR2300 RC 890 850pRG305 RC 305 825p RC628 RC 965 900pRG306

FS9/1-10/1

VS5 RUK

RC 306

RC 307

RC 308

825p

850p

825p

SHARP

G01210ESA, 123CESA, 204, 251 RC 140M 850p

VS4-1 RC 310 850p SIEMENSMULTICONTROL 117C20) RC 311 800p FC616 RC 130 850pKORT1NG FC631 RC 132 850p

18279, 18396, 18460, 18521 SE RC 108 850p FC742 RC 164 900p40540 VTS RC 108 900p SONYLOEWE RM604, RM605, RM606 RC 140 850pDC11 RC 146 850p 32 CHANNEL RC 140M 850pMATSUI RM613 RC 141 850p010270601 RC 889 850p RM632, RM636 RC 160 850pVX770 RC 892 850p TATUNGMETZ FXA RC 877 850pJAVA COLOR 16890) RC 166 850p RC70 RC 883 750pCOLOR (7156) RC 183 850p FX70 FASTTEXT RC 894 850pJAVA (7180) RC 184 850p

TELEFUNKENMITSUBISHI F8632 RC 632 ST 850p939P/03607, 939P/03609 RC 140M 850p F8639 RC 839 ST 850pNOKIA

SATELLITE

NORDMENDETC2336

CMC1, TC3519

RC 550

RC 351N

RC 356

850p

850p

875p

THORN/FERGUSON3V35-42 RC 342 850p3V31-32 RC 344 850p3V57-58 RC 628 900pTX10 TEXT RC 732 750p

OCEANIC TX10 STEREO TEXT RC 738 750p390C9500 RC 339 900p TX9-90-100 RC 740 750pORION 3V55, FV11 RC 783 900pRC53 RC 892 850p TX100 FASTTEXT RC 785 800pPANASONIC TX100 STEREO FASTTEXT RC 789 800pEUR51200 RC 200 850p PROFESSIONAL RC 790 800pTC2200 RC 201 850p TOSHIBAVSQ0357!NV730 RC 202 875p CT937 RC 950 850pTNQ1621 RC 203 900p CT9117 RC 951 850pPHILCO

201R413 RC 952 850pCARVEL, CONCORDE,

MERCURY, TELESTARTC10

PHILIPS

RC 108

RC 152

850p

900pUNIVERSAL PROGRAMMABLE REMOTE CONTROLControls up to 4 differe -it devices which use infra red

remote controls including TV, audio, VCR and satellite.RC5002,5154 RC 134 850p (need original remote control TC program)KT3 NON TEXT RC 135 825p Order code: IR1OOR Price: 1950p69117032 RC 178 875p We stock Remote Controls for over 5000 different69117194 RC 180 875p models. Ring for further details on 081-900-2329.RC5991-UNIV RC 300 850p

VCR ALIGNMENT KITCONTAINS:

SET OF 7 HEAD &TAPE PATH ALIGNERS

RCA TYPE AUDIO &CONTROL HEADPOSITIONING TOOL

RCA ADJUSTMENT TOOLFOR TAPE GUIDE POSTS

* RCA TYPE BACK TENSIONTOOL

* TENSION ADJUSTMENTTOOL FOR VARIOUS USES

* VCR ADJUSTMENT TOOL

SET OF 8

ALLEN KEYS

* 0.77mm

* 0.90mm

1.27mrn

1.53mm

* 1.60mm

* 2.00mm

" 2.40mm

" 3.00mm

3 Reversible Screwdrivers Circlip PliersSpring Hook Micro Screwdriver

VCR Head Extractor

Order Code: TOOL10 Price: 300Cp

FUSES

TIME LAG(20mm)

QUICK BLOW(20mm)

Value Order Code Price Order Code Price

160mA FUSE01 75P FUSE17 60P250mA FUSE02 75P FUSE18 60P315mA FUSE03 75P FUSE19 60P400mA FUSE04 75P FUSE20 60P500mA FUSE05 75P FUSE21 60P630mA FUSE06 75P FUSE22 60?800mA FUSE07 60P FUSE23 60P1A FUSE08 60P FUSE24 60P1.25A FUSE09 60P FUSE25 60P1.6A FUSE10 60P FUSE26 60P2A FUSE11 50P FUSE27 60P2.5A FUSE12 50P FUSE23 643P

3.15A FUSE13 55P FUSE29 50P4A FUSE14 55P FUSE30 SOP

5A FUSE15 60P FUSE31 50P6.3A FUSE16 60P FUSE32 50P

CERAMIC PLUG TOP3A5A13A

FUSE33FUSE34FUSE35

10OP100PloOP

ALL THE ABOVE PRICES ARE FOR PACKS OF 10 FUSES

I.C. PROTECTORICPF10 ICPF38 ICPN10 .:CPN38ICPF15 ICPF50 ICPN15 ICPN50ICPF20 ICPF75 ICPN2G ICPN75ICPF25 ICPN5 ICPN2S

Price: Only 30p eachAUDIO CONTROL HEAD

Amstrad Original No: 150751Used on Amstrad TVR1.2.3, VCR4600, 4600M11, 4700

Funai V2S, VCR4600, 4800, 5200. 5600, 66C0. VIP300P,5000

Also fits: Fidelity, Funai, Hinari, Praline, Schneider,Towada, Uttraym.

Order Code: A1101 Price: £13.50

Amstrad Original No: 153154Used on Amstrad 008900, 8904, VCR2000, 6000, 8600,8602, 8603, VCR8604, 8700, 8704, 8714, 8800, 9005,

9244Also fits: Antitech, Boadstec. Casio, Crown, Fidelity,

Goldhead, Granada, Hinari, Marguant, Omega, Protax,Schneider, SEC, Sentra, Shiptorn, Tashiko, Tatung,

Towada, UniversumOrder Code: AHO2 Price: £14.50

G RAN DATA LTDK.P. HOUSE, UNIT 15, POP IN COMMERCIAL CENTRE, SOUTHWAY,

WEMBLEY, MIDDLESEX, ENGLAND HA9 OHBTelephone: 081-900 2329 Fax: 081-903 6126


WE WILL ONLY SUPPLY TOP QUALITY,BRANDED COMPONENTS

REPUTATION COUNTS WITH US

AERIAL ACCESSORIES 11400/ 10

AL COAX PLUG 1111. 11 1115408 20

FLY LEAD

VIDEO LEAD4 -WAY DISTRIB AMP 111.1

8 -WAY DISTRIB. AM.

71

7111.512125

I C'sC/0(62ASMI293-02SM1293-03

4.255.956.95

IATTERIES SAA1293A-93 1.15

NOWA MEMORY 142. 1.71 STK5332 4.15

MEMORY 244 2.51 S110.5421 3.50

CAPACITOR51105422

STK5481

5.546.95

634 511(5482 4.9511 5767308 5.5422 STK7348 5.5135 S1R4211 6.95

2514 STR5412 4.95

STR50103A 5.95

35 STR58041

6.955.95

47uf at 2504 OST1)811700

11/A2270

1.15

2.75:000 at 2504 125 1DA2576A 5154009 TDA2577A 3.51I ul at 4004 TDA25711A 2.154 /LA a1400V 35 TDA2579 315lOul at 4004 71 TDA2581 4.51

15 2.51

OR TRAYS TDA2653/03 215CONTINENTAL 3051 ...... .1.15 _.._1.15

6404016 CUC2400/2410 13.71 MA3562ARM1 4.651DA3565 3.15

UNIVERSAL 15 -LEAD) _515 11)&3521811_.115TD/357613 11.25

RASES 1083651/3 2.1520mm NS 00 PER PIU5001W630MA/8001AVIAi1 60/21/2.5.4,3 151/5A 1.111 4.5120ms 0/8 (10 PER PR) 525500NA100141/14212 5A 11 TDA4503 4.15

SERVICE RMIUALSMA4505E 5.45

Iwstrod 1600 115 MA46002 2.15

6000 915 7044600-20.3.15Ferguson 1X85 1.51 TDIA601....2.153459 13.51 TDA4601 DIE..._3.753465 13.51 TU1039.....1.15F411 13.511

7102018,4 2.51

FV3/ 17.25 1VP41C4341-3414 14.15

11/P47C4341-341511.47C43411-3537

141514.15SERVICE AIDS

CLEAR TEST TAPE 7.95 TT,0'47C434N-3555 15.55FIBRE PEN 150 1611,47C4341-3559 14.15HEATSINK COMP

SILICON GREASE 1111..

SOLDA MOP

SOLDER 5KG/ I 8SWG

1.551.15

75

7.95

UNE 11/7 111,111SFOUNIIS

fxeIrsool Tx9° 2e"

WELLER GUN TIPS 121 1.6510100 11001%100 FST

13.111725

DIODES

R2M ISFoilotoo A51FFalsity /12000 8 MOD

17.7513.15

BYI33 713000 1275

84227 20 !Nan CT1/5 1115

G.G.L. COMPONENTSPO BOX 72, UNIT 7, SOUTH JOHN STREET, CARLISLE, CUMBRIA CA2 5AL.Tel: (0228) 39693/20358 Fax: (0228) 515127.

NKR CPT1171/1076 11.75CP12171/76/78 15.15

64(12276/2278 11.45

Cr2476/2478 17.15ITT CONPACT ENNU110 1415CVCI200 11.15

NMI 1110/2040 .. ... 11.75

hassoic TLFI4567F 10.25111145681 1925

VR5461SRN 1100/1200Say RM632/636NA610/612/616Tatar( RC40/45RC70

RC90Tonal WITH ESTNON FST

11.50

14259709.700259.25

111521.15ITN

1111E0 HEADS

MOMS Amstrad 4500/90011

FIDELITY CRVI40 111.1. 1.51 1600/1/00MUNK CUC131 3.51011/CTX SW -REMOTE .. 11 1.51

PHILIPS UNIVERSAL 1.25

TX9/10 STANDARD ..... . 111169/10 REMOTE. 1.75

11815151915BC639 21

E111208D

FIU426A

BU500

FIU508AF

0115080

BUTT IN._...BUT56A

202.84

R405019053 54V19064411P296(101688)T117112H3101670)

11PL79IA

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NUMMIBELT NT 1.15

CELLUIAR SPARESANTENNAE

308 BODY MOUNT 1111 14.25

3DB GLASS MOUNT 15.95

Motorola 8500 1/4 YALE 9.95

88000 1111 9.15

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REEL MOTOR (GEN) 111.15 (RUA HOT1JNE 23.51

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VIDEO LAMPS

F3,1,1r3ww"9300/381

2.203.001.15

NEC P3 7001001 23.51

Wise 101 10011All 24.51190 23.51Psaasoms F I 700104 23.51

Sony CMH333 24.51

Tecanoohose 1P3 24.5071405 700kMH 23.50

BATTERY CHARGERS

DESK TOP TRICKLE

MOTOROLA 8000/88000 23.95

51 MOTOROLA MICTRATAC 1111 24.51

71 NEC P3 21.95

1.51 X0100101 24.95

51 PNIASONIC F 24.51

SONY CMI4333 . 24.95VIDEO LEADS

SCART TO SCARE FAY 1.75

SCAN LEAD TO 6 PHONO.. .4.15SCART 10 2-SCART SKT .... 5.25

VIDEO REPAIR KITSF3 3429.30

3964/453464/65Mach VT8000

VT11/336 1111

Y1120/1306Paimsonic NV230 IGEN)51333 (GEN)NV370 (GEN) 1111

14130 (GEN)51730 (GEN) 1111

114771 (GEN)

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NEW CATALOGUE NOW BEING

COMPUTED PLEASE REQUEST

0E51 TOP RAPID/CORD.

MOTOROLA 98009 12.50

NEC P3 12.95

110100 101 12.95PANASONIC F -SERIES 42.95

SONY CAN1333 44.95

P/PACKING CI 00 + VAT FORCOMPONENTS.

MANUALS - 01.25 P/PACAUNG

EXPORT ORDERS P/PACKING

AT COST.

CELLULAR PARTS C3 PER ITEM.

WHEN ORDERING PLEASE ADD P/P

10 THE ORDER 6 THEN ADO VATAT 17 5% 1() THIS TOTAL

MI "MINIMUM ORDER VALUE (5ALL STOCK ITEMS 81 RETURN"

DUE 10 MANUFACTURERS

PRICE RISES WE RESERVE THERIGHT TO CRAG( PRICESWITHOUT PRIOR NOTICE

I104 ABBEY STREET. ACCRINGTONLANCS BB5 1 EEVI 0254 23652 1 2 32611 CLOSED AT TRADE COUNTER

Service

WE ARE CALLERS WELCOME

FAX 0254 395361 ALL DAY24 Hr M°SNA-HIT-mSPID

MARAPET ELECTRONIC COMPONENTSTel: 0452-526883

For TV * Video * Audio * Computer SparesTUBES SEND LARGE 5 A F FOR TRADE CATALOGUE

,. - - , 0 AVAILABILITY' on your,,,SELECTED, ,,Om seri.=SAE lot more information on

COMPUTER SPARESAMSTRAD

PCW 9512 Armature 43000C1COM371V1,80DORE8 E29 91

.2.PC464 Keyboard £2552 C64C Modulator £1596ATTENTION CARAVAN OWNERSTOURING FRANCE? STATIC IN

SILVERDALE

14' Multsystern TV 1294.002r Mulbsystem TV CIIIMMulttsystern Vkleo £409.00

Yes as surtabH Tor Fran.,st &deo Player only 12v ACA3CMains/Battery £159.957' MONO TV/RADIO [70.00Portang Caravan Aenal £10.50(WEB senaVall fixings)47cm Flat Pale Sateline £77.00Dish w1111LNB

VALVESNEW - Branded Boxes - full range - (matched

pairs avaRaINN

ECCO1 00.0 ECM E2.90

ECC83 E4.90 ECCft5 (3.00

EC C88 £3.24 ECU32 (337ECLB13 (3.50 1134 (7.00ELBA 0.00 11519 0.50GZ34 E5.00 KT66 £375KT88 £10.00 PCL805 (2.70PC1813 (3.40 PC504 63.00PI.519 185.90 PY500A 095128Y7A 6.50 616GC 053161601 (531 6K06 05.00

IC SELECTION PHILIPS MONITOR LEADAms40054 011.69 TA841010 C4.59 CM9073 On/Off Switch £5.25 Arnica to Scan VP £8.29

Ams40092 r9.01 180530 £125 We are unable to list all we .n supply A large range of Amstrad.AY38912/P £7 74 TBA810P c1.2s CBM. Philips. parts is available - plus selected spar. for Acorn,130048A £4.17 TBA810S £135 Atan, Epson, Panasonic. Sinclair. Star and ottersCA7410E £025 TOA1001B £239014965 £3.99 7DA2595 £424 THIS IS JUST A VERY SMALLCDP13818AE £7.24 TDA3562A.CO24947 (10.03 TFK £4.99 SAMPLE OF OUR STOCK0025913 £27.99 TDA3654 £2.89D51488N m 79 TDA4600-2 03 70 TV/MONITOR LINE OUTPUT TRANSFORMERSDS1489N £0.79 TDA8170 0 45D07515014 CI 49 TEA2000 £5.78 AMSTRAD. IBM, DIGITAL. etc. P.O.A.

DS75154N E1.50 T1P1791A 1:2 25 COMMODORE 1084-10SP etc P 0A

511113 12.99 TL43ICLP £1.99 PHILIPS CM8533/CM88,13 etc. [21.27PHILIPS CM11342/62 ICM13833 MK II) £24.49

HA12006 £7.08 TL497ACN £399 Ferguson 1X9016' 93 £19.75TMS4532N14

1

LA13M12 094 0909

£29215 UC3842

0£2 3499

Ferguson TX100 20'90' £19.82

184833 £1.95 UM6845 £8 72 Ferguson TX100 22726' 110 £10.99

MAI381611.069 C1904 UPD80391C 1210.55 Ferguson TX100 51crn FST £20.49

M88141612 £3.75 D(8301 £10 17 Fidelity (Please quote model) P 0 A

MC1377P C6.73 ZXB400APS £1.79 GEC C2089F00H7C2288 to 2291H/C2294H £21.60

MC74HC85 £0.85 ZX8401 £54, Hitachi CPT14637CPT1623/24/26,14/46 £22.13Hitachi CPT2036/46/76.778/CPT2234/36/CPT2246778 E2160

MK4584.15 El 79 14DN476G 01430 Hitachi CPT2174/2176/2178 £21.4325A1706 £1.34

NE555CDP CO 27 2SC2331 £1.35 Panasonic TC1631/2031 61003412200 E23.99

P8255A t2 65 27C256-200 C3 50Panasonic TC2160 8 702122/2162 £28 99

PC713V £2 89 4116-2N £1 75 SaishofMatsui. (Supply No on 1.0.T 1 P 0 A.

R2G 0 29 6569R5 VIC r13 49 Many other Une OfP Transformers available.

52000AFI £1.99 856582 VIC £15.03 AUDIO SPARESSE09420CAC £14.93 74L000 0 15 AMSTRAD MX2007CDX400 (FUNAI)CASSETTE DOOR £2.90TA7280P £4.95 741S157 £0.25 B T. FREEWAY TELEPHONE- REPLACEMENT AERIAL £365TA7281 P E4 95 7410245 £0 39 SHARP RGF278, 281, 284 MAIN BELT C1.19

IC Protectors -For N Doses 50p each TOSHIBA STU2/1_ MAINS TRANSFORMER £9.99

EQUIPMENT MANUALS Many other spectfic Pans and Manuals available

Large sob.. of Manulacturers Sumo & TV SPARESUser informafion available Ortgami manuals GEC/HITACHI FRAME MODULE HM6251 £7.94supplied rf passible We only show a few GOLDSTAR CIS4361/4441/CIT2162X/2172X 070 SWITCH £565Computer Equipment examples here Con- HITACHI CPT218872650 On/011 SWITCH £4.33tact us for TV. VCR. Audio Equip. SAMSUNG C1537V/CX558WT 0117011SWITCH £6.05

Amsted PCNI9512 Service £1453 Large range of TV Spares available for many makes.Amstrad PC146,130 Sem. £5.00 VIDEO SPARESAmstrad PC I 2HRCD Service £5.00 Large ranged Video Heads. Idlers. Belt IMs. Pinch Rollers Iran stockCBM C64/C64C Service E14.99 - plus mucch much mom Please contact us.COM C64 User £5.49CBM C64C Lser £4.99 REMOTE CONTROLS FOR SATELLITECBM C. 4 User £549 AMSTRAD 51X200/SRD400 & SRD510/520/600 each type £12.75CAM 10840-, E9.87 PACE PRD800/PRO9007SS90007559200 £1295Philips CM8833 (k4k1) Service £8.55 We also INN NAN Amiss Commis -- Way Canal Congsnorts.

Stand aloxo security alarm £19.96Traveler Sel Top aerial £10.00 WIRELESS SECURITY SYSTEM

LABGEAR/TELESTE AERIALACCESSORIES

New system which can even protect your ur in thedrive. shed, garage all without wires linked to yourhouse ahem. British made- Can't be jammed. Ring for

Info Peck.

017291 Muttiset 1 £12_88

CM7292 MADAM 2 £13.80

CM7293 Multisei 3 £17.10CM7294 Multisei ing.10

CM7296 Mulbser 6 DaisCA7298 Mortise) 8 (MNCM7265 Mast Head Amp W/B UHFNHF (10.20C987266 Mast Head Amp WfB UHF £9.30CM7268 Mast Head Amp UHF A/B/CD £10.88CM7271 Mast Head UHF W/B 00.5CA17262 Power Unn Fa MHA £11.92

049035 Outdoor STAler 0.04CA19009 Flush TV/FM outlet £5.76C949003/00 Flush single outlet C2.23CM9003/01 Flush single isolated 060CA19010 Flush tern outlet 0.43CM9700 271.1118 CB Suppressor E6.54

CA19034 UHF Filet AfB/CD£7.50

CA5004 4 Way Video AmpCM5188 Satellite IF OW 8 Way (53.00.

LOADFAST LADDERLOCIC E19.99Device which locks your ladders ono the roof rack Stopsthem Upping and prevents then, invakiabkt to The aeriaVsecurity and satellne engineerSANER FLEX STRAPSCan be made to any Ongin1M £1.9523.1 0.40FLEXLSTRAP Arnm

.750mm El 761.9m £2.00

FLEXISTRAP 58mmju £2.95251 £381

Ideal for securing timber, pip., boxes, tubes, skls,dIrghlee surlboards or any Items you win to secure toa vehicle roof for commercial or leisure uthetties.

CM5110 IF Une Arne Sateltne £10.60'CM5112 Sat Block Cony + PSU £125.00.CM7222 Televerta VHF 10 UHF C55.90.

-Mow prams NSW stocks Pat

OUR NOW FAMOUS

DEGAUSSING COIL £27.50

WE CAN'T UST EVERYTHING 11411 WE STOCK. OUR RAGE IS 43101 190 WE p.WE A TRADE CATALOGUE ON REQUEST WE ARE ALSO ON 1710 WITH

V

"MOVIES" 10 ORDER ANY ROOFS PART QUICKLY JUST SOME Of THE THINGS TUBESWE SEILARIALS, BRACKETS. BATTERIES, CABLE CONNECTORS, CMOS CAPACITORS,COMPUTER ACCESSORIES. DISCS, DIODES, ELECTRICAL ACCESS. FUSES ICs, LOPIL LEADS,

MADUAIS. PUSH BUTTON LIGHTS. PHONES. PHONE ACCESS, POTENTRAIERS, RELAYS,SEMICONDUCTORS. STRIPPOARO. 31111. SMOKE DETECTORS, S111101ES, mess. TVBATTERY LEADS. N WALL BRACKETS, TOOLS. TEST EMI/PREM. VALVES MO EVERVANGYOU NEED FOR VIDEO REPAIRS . HEADS, IDLERS, TYRES. PINCH ROLLERS. CLEARS, 1ES1

CASSETTES. VIDEO TAPE (Inc BETA arch V10001etc

HOW TO ORDER: Up to 1K ADD (2.00 perorder PP (U.K.). Heavier parcels. e.9.cables, service Inds, degausing coilsplease allow £4.00 Pt -P (U K.). Exportorders charged at cost. First Class Mail isused whenever possible. Add 17.5% VATto total except where it states zero rate.Over 3K will be sent by caner £12.00 r -VAT up to 15K Mtubes!u.tubes! We do notdespatch on Saturdays.

Philips CM138xx Service SuPP £300PholipS CM8873 Service £8 76

WE ARE PLEASED TO SERVE NTH THE MADE MO DID USER.

Philips CM/ 1342/62 Service EV 99When ordering. Please add 01 20 P & P ( 50p for LOPIS) then

add 17 5% VAT. (NB VAT is due on PAP- Manuals are Zero-rated)*NO VAT ON MANUALS' 'Validly dales required for card orders. also issue No for SWITCH

Ali items subject to availability - Prices can change without notice.

Please send S.A.E. with all written enquiries MAIL ORDER ONLY to:ORDER BY POST OR PHONE

We accept payment M.E.C. (Dept.TV)Goods are despatched on the day we receive your order. If for any ree on we are out of stockwe will try to Inform you as quickly as possible. We try our best to give a speedy, fair and

Please ifDELTA, SWITCH, NSA

13 by VISA, Access, =Mb 1 HORNBEAM MEWSGLOUCESTER G L2 OUE

efficient service. VAT invoice on request. Give use ring -we'll give you service. askis listed- help. Prices to notice. Inwhat you need not we will try to are subject oh nge without

some uses we may have to supply an equivalent. We need expiry dates for credit card orders.MIN. ORDER (5.

,--- --7 Cheque or P.O. MM.


ELC EAST LONDON COMPONENTSAUDIO TELEVISION VIDEO

COMPONENTS AT VERY KEEN PRICESTEL 081-472 4871 FAX 081-503 5926

LINE OUTPUT TRANSFORMERSOVER 100 MODELS AT LOW PRICES

AKAICT2570ECT2870ALBACTV14RS

19191599

19.99

MATSUI14201440614501465

16.9916 9916.9919.99

AMSTRADC7V2200 14.99

1480AMRSUBISHI

1199REMOTE CONTROLS FROM £7.99 VIDEO BELT KITSIDLER TYRES 50p 1+, 25p 10+ AKAI

VS1/2/5 1.75VIDEO HEADS FROM £6.99 VS22/35 2.00

CTV2210TVRI/2/4BUSH20201

14991199

1199

C72528ETXC72839ETXORION14RX

11991199

16.99Over 200 models at very attractive prices. VS109/250 1.50 2714 1699 PHILIPS

ALBAAKAI, AMSTRAD, FERGUSON, FISHER,VCR4000 1.50

FIDELITY2%2000 1450

KT3KT4

13.9916.99

GOLDSTAR, HINARI, HITACHI, LOGI, AMSTRAD 27(3000FERGUSON

1299 KT30K740

16.9916.99MATSUI, ORION, PANASONIC, SAISHO, VCR4600 1.80 TX85/86 16.99 2A 1629VCR6000 1.30SHARP AND MANY MORE

VCR7000 1.00T090REDSPOT 1199

3ACTX E/S

16191599VIDEO SPARES FERGUSON WHITE 14.99 CF 1 1599

3V29 TAKE UP IDLER El 30p 3V22 1.803V29 F/F REW IDLER 12.609 3029/30/33 1.00305965 FV10/14 IDLER Et .50p 3042/65 0.95

1098109910100FST

19.9916.99

16.99

NCRGR1.AXG90 AEPANASONIC

161916.9916.99

3V23 LOADING ROLLER BAR C3.99p HRD520/830 120 BLUESPOT 16.99 TLF14520F 2419SHARP 0005 & 0006 E1.959 RSHERS GREEN 14.99 TLF14521F 24.99SHARP VC651 ASSEMBLY E1994 FYHP615/725 1.10V711/14/17 IDLER El 955 FYHP905/910 1.10

YELLOWGOLDSTARCBT4282

1599

16.99

TLF14567FTLF14568FTLF14584F

24.9924.9924.99VT11 CLUTCH ASSEMBLY 11.999 GRUNDIG HINARI TLF14586F 2499VT100/225260 IDLER E2.75p VS180 1.45 CT4/5 16.99 SAISHO

NEC 9013 IDLER E4 99p VS300 1.90 CTV140 12/9 CT14R 16.99SANYO VHR3300 IDLER ck., VS380 135AKAI VS105/250 CLUTCH ASSEMBLY HINARISAISHO VR380 CLUTCH -;; V0L3.20 ' 1.25

I VXL4-35 ISOMITSUBISHI H5337 FIF IDLER

HITACHICPT1446CPT1455CPT1476CPT1493

16.99119916.9916.99

C714IRBSALORA2106025051SANYO

16.99

161916.99

ALBA SENTRA PULLEY ;Z: HITACHIVT11/33 1.30MATSUI UMITER POST

PANASONIC NV370 IDLER E 5201.75.

.1717 VT5110/2j62 10VT

CPT1646CPT2028CPT2036CPT2048

16.991599159916 99

CBP2146CTP3246CTP6262C7P7130

29,9929.9929.993199FISHER 615 IDLER

Ef34.50P5°P

MITSUBISHIHS306/307FISHER GEM ASSEMBLYAMSTRAD PINCH WHEEL MOD KIT

C3.990 PHILJPS

CPT2078CPT2084CPT2087CPT2174

159916 9916.9916 99

CTP7132CTP7135SENTRAGX9000

31993929

16.99UNIVERSAL TRIFLER E4.99P YR6548 2.40 CPT2176 1619 009700 1599UNIVERSAL TRIFLER WITH FOCUS E7.99P YR6367 1.50 CPT2178 16.99 SHARPHITACHI MODULE HM6251 f6.990 SAMSUNGCUC2410 TRIPLER 06.99 VX510/520 1.50

CPT2238CPT2248CPT2276

161916 9916.99

C14105C3700CT28105

29.9939/929.99TENSION BAND FOR MOST MOD. FROM E1.99p sANyo

CPT2278 16.99 SOLAVOXCIRCUIT PROTECTOR ICP 50P VHR1300 2.15 CPT2476 1619 16R19 16.99TX10 FOCUS UNIT E7 99p VHR3300 2.05 CP12478 1599 20R19 1619PHILIPS BACK-UP BATTERY £1.30p SHARPALBA BATTERY 1F 5.5V E2.50p VC381 1.30

ITTCT2613C73306

11991199

22R1926R09SONY

16.9916.99

P/ SWITCHES FOR MOST MOO. FROM E1.994 VC651/681 125 C73325 16.99 KV1442 16.99SONY FUNCTION SWITCH 0.859 VC9300 1.50 CT3425 16.99 KV1882 16.99C73835 1199 KV2052 1599

ELC EAST LONDON COMPONENTS63 PLASHET GROVE, EAST HAM,

ST3487ST354671X2613

16.9916.991599

KV2066KV2096KV21XRTU

16 9916.9916.99

LONDON E6 1AD. TEL: 081-472 4871 1033277X3447

16.991599

KV2204KV2212

16.991199two minutes walk from Upton Park Tube Station 1%3835 16.99 KV2217 16.99

PLEASE PHONE US IF WHAT YOU NEED COM 13ORCOMB

16.9916.99

002704KV2705

16.9916.99

IS NdT LISTED AS WE HOLD THOUSANDSOF ITEMS IN STOCK

DIGI 1-3MONOPRiNICVC25/32

16.9916.999.99

KV2752KV2756TATUNG

161916.99

ADD £1 P/P ADD 17.5% VAT LOEWE OPTAART 1 1599

1718422TOSHIBA

19.99

ALL GOODS DESPATCHED SAME DAY CLAS M 124PROF S 28

16.9916.99

150F602ANUSSI

35 00

PRICE SUBJECT TO CHANGE WITHOUT NOTICE STUDIO 1 16.99 205M502 19.99VISA ACCESS ACCEPTED. MIN ORDER £5.00 STUDIO S 28

ci1,101, 2816.9916.99

22575022627511

199919.99

AN 3822K 7.99 LA7835 199 STK 5730 600AN5151 199 MEA2901 260 STK6962 5.80AN5435 2.50 M4906B1 8.50 5107216 7.00AN5515 2.99 M491081 8.50 Sll<7226 8.50495521 2.99 M49481 B50 STK7308 4.25AN5900 1.50 M5840A -84 9.99 STK7348 4.50AN7161 3.40 M54543L 2.99 STK7356 9.00AN7171 4.25 M54544L 2.99 STK8250 100497178 260 M54545L 2.99 STK 73410 6.99BA718 159 M545481 425 STR441 6.50BA3402 3.99 M54549L 4.50 STR3125 5.99BA5402846109

2.601.80

M54644L 199M54647L 199

5764211STR5412

5.994.50

BA6121 2.99 M54648L 3.99 STR6020 4.50BA6122 1 99 M54649L 3.99 STR9012 6.00846209 2.50 MB3730 2.00 STR41090 6.00046219 2.99 MB3731 2.99 STR44115 7.75046222 119 MB3732 2.99 STR40090 5.99BA6229 2.80 MC13306T3 3.99 STR50020 6.50BA6238 119 MDA2061 519 57050103 4.99846239 2.50 MDA2062 4.25 STR50115 6.50BA6304BA6305

1.901.90

STK430 7.00570433 4.99

STR54041STR55051

5.508.50

BA6259 299 STK457 6.50 STR51041 5.50BA10324 1.99 STX459 559 STR59041 6.508410358 110 STK461 710 STR10006 6.00BA15218 2.20 5TK463 1060 STR01806 6.00CNY65 4.99 STK465 7.50 STRD6008 8.00CNY75 299 S700029 3.99 SAA1025 6.00CNX62A 2.99 STK0040 5.50 SAA1250 3.50CNX82 199 STK0060 9.98 SAA1251 4.50CNX83 2.99 STK2029 5.99 SAA1290 8.00HAI 377HA1397

1.99260

STK2048 11.005702129 7.00

SAA12915441293.03

9.008.50

HA11125 199 0102250 8.00 5441294.03 13.00HA11227 2.20 STK3041 6.00 SAA5000 2.509411235 1.99 STK304211 6.50 SAA5010 4.30HA11423 220 STK306211 7.00 SAA5012 3.75HA11711 6.50 5704026 9.00 58.45020 3.50HA11717 4.75 ST0411111 760 5445030 459HA11753 5.99 STK4122 0.04 747193 4.00HAI 1 758 5.00 STK413111 6.56 TA7205 1.00H413001 1.95 STK413211 7.06 TA7222 1.20HA13008 9.99 STK414111 6.50 TA7240 2.60HA13108 3.50 STK4141V '8.00 TA7241 2.60HA 13117HA13118

2.992.99

STK41421ST041511

7.757.00

147264TA7269

4.995.50

HA13119 2.99 51ST041521 9.00 TA7270 2.50HA13402HA13403V

3.155.50

STK41611STK4162118.0C9.99 747271

TA72732.503.50

L44162 1.99 5 STK41711 9/9 747279 4.00LA4270 2.99 57041721 9.00 TA7280 2.99LA4282 3.80 STK41811 9.00 TA7281 2.75LA4440 2.20 STK4182 9.99 147283 2.60LA4445LA4460

2501.60

5TK41911011(4192

199919

TA7288TA7293

2204.50

1,44461 1.60 STK4372 6.00 TA7299 3.99LA4465 2.99 STK4392 750 747680 4.00LA4466 259 ST904853 9.99 TA7699 8.50LA4475 199 5705315 150 TA8200 4.99LA4476 299 STK5325 7.00 TA8201 3.50LA4495 3.95 5IX5332 3.50 TA8207 3.25LA4496 199 STK5333 599 TA8210 3.50LA4500 2.30 STK5338 3.99 TA8214 150LA4505 2.60 STK5342 5.99 TA8215 3.99LA4508 2.60 STK5372H 5.50 TA8216 4.25LA4700 3.99 STK5421 760 TA8220 6.75LA6324 2.50 STK5422 6.50 1A13221 6.75LA7330 4.99 STK5434 7.00 TA8400 3.99LA7520LA7522

4.996.50

51054365105451

8.00zoo

TEA1039TEA2018A

1.991.40

LA7530 319 51K5466 0.50 TEA2029 100LA7800 110 STX5471 4.99 TEA2164 3.00LA7801 115 STK5476 6.99 7041037 2.00LA7802 1.95 STK5481 4.99 TDA1044 2.50LA7820LA7830

1501.99

STK5482STK5490

4.995.50

TDA1170TDA1510

1.203.50

LA7832 1.99 STK5720 6.00 TDA 1515 2.50

TDA1516 4.00 UPC1378 2.20TDA1518 4.00 UPC1394 1.90TDA1520 4.00 UPC1420 5.25TDA1521 3.50 UPC1470 2.00TDA1522 3.99 UPC1488 3.50TDA1670 3.00 UPC1498 3.50TDA1701 4.25 X24026 4.25TDA1770 10.00 SG264A THY 7.00TDA1908 1.00 SG613 THY 11.00TDA2003 100 TRANSISTORSTDA2005 1.30 BC372 0.50TDA2030 1.30 BC369 0.30TDA2170 3.00 0E869 0.60TDA2270 3.25 BU208A 1.10TDA2575 2.00 BU500 0.9970A2577 4.25 BU508A 0.991042578 3.00 BU508AF 1.30TDA2579A 2.50 8U5080F 1.507042581 3.00 BU50800 110TDA2582 3.00 BU903 1.60TDA2600 5.23 BU908 1.99TDA2653A 3.50 BUT11A 0.15TDA3330 7.00 BUTI1AF 120TDA3505 4.00 BUT56A 120TDA3560 3.25 BUK444 2.99TDA3561 3.00 BUX85 0.65TDA3562 3.00 BUWIlA 1.40TDA3565 3.00 07.4114 0.70TDA3576 7.00 DTA124 0.45TDA3640 4.00 DTA144 0.50TDA3650 10.00 DTC114 0.60TDA3651 2.00 DTC124 0.50TDA3653 2.99 DTC144 0.55TDA3654 119 MJ2955 0.757DA3300 500 MJE340 0.401044500 3.75 MJE13005 1.301044501 4.75 MN650 4.00TDA4502 5.00 R4050 1.30

04051 '1,501DA4505 3Y 4.00 S2000AF 1.50TDA4504 499 52055AF 1.50TDA4505 E 5.99 TIPL761A 1.75TDA4505 M 12.99 TIPL791A 1.30TDA4600 1.99 TIP112 0.70TOA4601 1.99 TIP3055 0.60TDA4950 1.99 293055 0.75TDA6200 8.00 293773 1.301047240 3.00 2SA769 1.307048170 2.99 2SA773 0.757048175 2.99 25A965 0.257048178 4.25 2SA985 0.651048185 5.00 2SA999 0.207049190 3.00 2SA1013 0.30TPU2732 19.99 25A1020 0.30TMS47C432 15.00 2SA1102 1.80UPA810 1.99 2SA1104 200UC3844 2.99 2SA1106 2.00U4646 8.00 2541141 2.00UP01031 1.10 25A1146 110UPC1181 1.10 2SA1208 1.50UPC1182 1.10 2SA1232 1.80UPC1185 6.00 2541265 1.50UPC1188 4.00 25A1302 3.00UPC1230 210 25A1386 2.75UPC1238 1.90 2SA1535 1.60UPC1225 2.20 258536 0.00UPC1241 3.50 25E1554 3.50UPC1277 2.40 7S8557 3.00UPC1278 2.40 2513558 3.00UPC1288 4.00 258560 0.40UPC1298 4.00 256562 0.40UPC1310 6.00 250595 010UPC1335 4.00 250632 0.40UPC1318 4.00 250643 020UPC1363 3.00 25E1649 065UPC1364 5.00 2513686 1.20UPC1365 3.25 250688 1.30UPC1377 2.50 258705 200

256755 3.50250817 2.002513861 0.602513882 0.8025E1891 1.4025134392 0.8025131010 0.7525131016 0.802SC828 0.2525C829 0.25250867 3.752SC1061 19025C1173 0502SC1212 0.6025C1399 1602SC1413A 2.402SC1454 3.2525C1573 0.4025C1670 0.852SC1678 1.2025C1827 1.2025C1922 2.752501941 1652SC1942 1.9525C1969 1.602SC20713 0.802SC2229 0.3025C2235 0.4025C2335 1.2025C2458 0.302SC2502 0.902502564 2.4025C2565 2352502577 1.202502579 1.302502580 1.802502581 2.002502791 2.602503156 2.602503169 2.002503182 2.502503281 3.002503284 1102503519 1.502503679 2.002503944 1.60250315 0.002S0400 0.20250401 0.50250424 3.50250427 3.502513716 120250718 1.30250725 1502513837 0.902S0845 2.50250856 580250869 3.25250870 3.25250871 1252501047 2002501065 2.002501138 6602501207 6502501276 1.202501292 6502501397 2002501398 1.702501426 2.752501427 2.752501432 2752501439 2.002SD1453 1.702501497.02 6.002501497-06 6.002501548 5502501555 4.002501877 2.502501911 4.00

Capacitance Meter200001 12999

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WEINNot so bad when it comes to itI'm not that old to be able to recall TVinstallation work when it all started backin 1936. A lot of concern was no doubtexpressed over the move from h.f. tov.h.f. transmission and the problems thatit might bring. In practice the jump fromthe highest radio broadcasting band, ataround 26MHz, to TV at 40MHzupwards in what then tended to beknown as the ultra short-wave band wasnot all that great. It probably justseemed like a huge leap in the dark. But

can recall, quite vividly, the alarumsthat the prospect of Band IIItransmissions produced. We wouldn'tbe able just to stick up an aerial and linkit to the receiver via a suitable length ofcable. Oh no! Installations would haveto be engineered. Standby Mrs. Jonesfor the arrival of the white -coated menwith their signal -strength meters,reflectometers, wavemeters andgoodness knows what else. There wereprofound mutterings about termination,standing waves and so on. And whathappened? People stuck up aerials,connected them to receivers by lengthsof coax (some not all that good) - andgot signals. We had a repeat of all thiswhen u.h.f. was about to be used for TV.Now this really would be dodgy, withsignal strength varying from one side ofthe road to the other and such worries.Hmmm. And of course the same direwarnings of problems ahead came withthe move to satellite TV.

The early days of satellite TV saw allsorts of specialists using sophisticatedequipment to find the signals. Just stickup a dish and point it in the rightdirection? Good gracious, no one wouldever be able to do that. Each individuallocation would require a computerised

investigation into the angles required forreception. In practice, as usual, it turnedout to be totally different.

Consistently over the years thosewho have forecast horrible technicalproblems ahead have been provedwrong. This is because they have tendedto overlook the ability of manufacturersto come up with practical hardware andsolutions. When it comes to theexploitation of higher frequencies, thereis often a solution sitting on the shelfwaiting to be adopted. Radar andvarious types of military technology willhave evolved components that arehorrendously expensive - when madeand used in tiny quantities. Pass themover for mass market application and theprice falls dramatically. So, for example,we get sophisticated transistors that giveus very low -noise satellite front -ends. Abig difference from the MSP4 h.f.pentode! Radar also, incidentally, gaveus the early high -voltage switchingtransistors for line output stage use.

In the early days of satellite TV wewere, of course, dealing with weaksignals and untuned receivers. By thetime that mass installations wererequired for Astra we had strongsignals, metalwork with pre -stampedguidelines and pretuned receivers. Sothe practical, everyday world onceagain turned out to differ from what thetheorists forecast.

All this is not to suggest that there arenever any problems. If you areunfortunate, reflections, multipathsignals and site problems can cause agreat deal of trouble with terrestrialreception. But you have to be a bitunlucky. Most of us don't have to worryat all. In fact a silly old set -top aerial

"Milk REED°,41.111°.....of BUSINESSNir PUBLISHING

does because modern u.h.f. tuners are sogood. When serious problems arise itdoes become a matter of careful systemengineering. Many examples have beendescribed in these pages over the years.

The coming of colour and the comingof video were other events that producedgloomy forecasts about what we were infor. You'd need a degree at least tounderstand all those colour vectors andwhat went on in a decoder. From thestart the circuitry soon disappeared intoa chip or two and people stopped havingto think about it.

For a time the v.h.f. tuner, then theu.h.f. tuner, was considered to beforbidden territory. Enter at your peril!In practice once a few simple rules werelearnt it became possible to work onthem. Might the LNB be about to looseits aura of mystery? An article in nextmonth's issue suggests that this could beso.

There are and always will of coursebe silly people who do silly things toanything from a sophisticated camcorderto the mains plug. They make lifedifficult, sometimes dangerous, forothers. There seems to be no way roundthat. But readers of Television don'twear spurs, do they?!

Correction

A correction to our TV and videospares guide included with lastmonth's issue: the Amstrad phonenumber should have been given as0277 209 508. The fax number iscorrect.

EDITORJohn A. Reddihough

PRODUCTION EDITORTessa Winford

EDITORIAL OFFICE081 652 8120Fax 081 652 8956

Note that we are unable to answer technical queries overthe telephone and cannot provide information on sparesother than that given in our Spares Guide.

ADVERTISEMENT MANAGERCarol Nobb,081 652 8327

SALES EXECUTIVEPat Bunce081 652 8339Fax 081 652 8931

ADVERTISING PRODUCTIONBrian Bannister081 652 8648Fax 081 652 8942

PUBLISHING DIRECTORSusan D.m Hey

SUBSCRIPTION ENQUIRIES0444 445 566

SUBSCRIPTION HOTLINE24 -hour subscription ordering with credit card number phone0622 721 666 and quote reference INJ.

COVER PHOTO

This month's cover photograph shows a HamegHM605 oscilloscope in workshop use. This model hasbeen superseded by the HM604. See oscilloscopesarticle on pages 20-23.


MAIDonald Bullock

Have you noticed how some BBC correspondents raise theirvoices at the ends of sentences, baying them so that theysound like questions? One of them, a Martin Sixsmith, isparticularly adept at it. The trouble is that by the time you'vesorted out such quirks what they are saying is lost on you. Iwonder how they keep their jobs?

Now it's spreading to the public

A Troublesome Akai/ITT ReceiverA giant Akai Model CT2870 TV set waltzed into the

drive the other day. It was wearing wrinkled trousers over apair of moon boots. Then it came into the workshop and saton the counter. As its trousers and boots walked sidewaysfrom it I noticed a chest and a head, also a pair of arms.

"Mr. Drip?" their owner asked."No one here by that name" I said, sensing trouble."I'm Mr. Drip" he said, and again it sounded like a ques-

tion.My razor-sharp brain told me at once that he was right.

"What's up with the set then?" I asked, hoping that he didn'tthink I was trying to be funny.

It transpired that this monster telly was in fact an ITTCompact D2 FST set in heavy disguise. There was no soundor vision, just a faint flip-flopping, cloudy line across thescreen accompanied by a shrill whine. Strange symptoms.Before Mr. Drip loped off I got him and Steven to help meget the set on to the bench. Then I settled down to try toisolate the faulty stage.

What did the symptoms tell us? Clearly there was fieldcollapse and failure of the sound channel. The shrill whinesuggested that all was not well in the power supply. Whereto start? It seemed logical to check the power supply's outputvoltages, which were all as specified. Maybe there was someloading somewhere?

Checks showed that the supplies were missing at the fieldand audio output stages. So we didn't seem to have a loadingproblem, in these areas anyway. Back to the power supply.Though its outputs were - apparently - o.k., there was thatwhine.

A great deal of time was spent checking just about every-thing before I discovered that the reservoir capacitor for the31V supply, C732 (1,000p F, 35V), was low in value at about50p F. This value was apparently enough for the full voltageto be established, but not enough to meet the currentdemand. So we did have a loading problem, of a sort. Maybeif I'd carried out scope checks some ripple would have beenapparent. But this odd situation didn't encourage clearthinking.

When a replacement capacitor had been fitted the whinehad gone and the collapsed field was at full brightness,though lacking in width. The TDA3654 field output chip stillhad no supply at pin 9. After a good deal of searching alongthe wandering, mapping -pen thin print I found a hairlinecrack. Fitting a jumper lead restored the field scan and width,but there was still no sound. The newly repaired 31V supplywas getting lost somewhere before it reached the audiooutput stage. Another hairline crack was the cause of thetrouble, and another jumper cured it.

The set now gave excellent results. So I cleaned off the

chassis, set it up and, after giving it a soak test, waved it outwith a sigh of relief.

Incidentally I have to acknowledge the help of Pete Brookand his assistant John (Mr. ITT) Baker of Hoopwell Ltd.These kind people provided me with a manual and spares,and John suffered with me in sorting out the cause of thetrouble. Hoopwell are nice people. They provide a good,efficient, courteous service, and their latest catalogue is agoldmine. Talking to their Julie is a bonus. I almost wish thatI had another tricky ITT set to deal with. But not quite.

A Mitsubishi Euro 4I then picked up a Mitsubishi CT2532 (Euro 4 chassis),

another monster. "It works all right for hours, then the heightreduces or the picture goes dark or both" the customer hadsaid.

I connected a voltmeter to the AN5521 field output chip'ssupply pin, tuned in a picture and checked that the readingwas 24V. The supply comes from the line output trans-former, the feed to the rectifier and its reservoir capacitorbeing via an 0.82S2 resistor.

After a while I noticed that the voltage was falling. Alsothere was some field cramping a few inches from the top ofthe screen. Then, as the voltage decreased, the cramping gotworse. Just as the field scan collapsed, the picture darkened.A glance at the meter showed that the reading was now 3V.

I opened the set up and checked the 0.820 resistor. Itlooked hot and bothered. A replacement cured the fault.

Mr. Crout's HitachiMr. Crout struggled in with his arms wrapped around yet

another monster. The TV set I mean - it was an HitachiCPT2198 (G8Q chassis).

"Ven I switch on, noddings at all" he barked. "Only aferry dim screen, fitch is no gut to me". Then he smiled andnodded at me.

"I will do my best" I said, and off he strode.I tried to tune the set in and adjust the brightness but

couldn't. Maybe the SAA1293 control chip was faulty. Areplacement made no difference however. Next to it sat anMDA2062 memory chip, IC1502. This type of chip isprogrammed to meet individual chassis requirements and, Inow know, is colour coded by means of a small spot labelthe size of an aspirin. This one had a white label. So weordered a 'white -spot' MDA2062. When it came we fitted it,but this didn't make any difference either. By now a coupleof days had passed by and Mr. Crout was getting impatient.

"Fi so long?" he asked. "Don't you onderstant der techni-calities?"

I avoided a direct reply and studied the circuit. The volt-ages around the memory chip were all correct, and by now Iwas suspecting dry -joints or high -resistance plug and socketconnections between the two interconnected main panels.Resoldering and checking the plugs and sockets didn't help,and I was beginning to wilt.

A phone call to Chas Hyde confirmed that this set shouldhave a blue -spot chip. When we fitted the one they sent us allwas well. I reckon that all processor and memory chipsshould come prepacked with a few aspirin tablets.

Enter Miss Chang

Ven - I mean when - Mr. Crout came to collect his setone of our favourite customers, the demure and shapely MissChang, was trying to explain to us what was wrong with herMatsui portable, which is a Bush T2114 in disguise.


"It is - er - it is. . . " She put her palms together andinclined her head to her hands.

"Let me interfere" said Mr. Crout, clicking his heels andbowing, "I speak seven languages". Miss Chang twittered tohim and crossed her chest with her hand.

"Kaput!" barked Mr. Crout, and out he bowed.We found that the set tripped at switch -on and made a

bee -line for the BU508D line output transistor Q402. It wasshort-circuit, and a 1S2 resistor in the 24V supply was open -circuit. Vie - I mean why?

A check on the h.t. supply produced a reading of 145Vinstead of 1 IOV. Adjusting the set-h.t. potentiometer VR801made no difference. The power supply is the type that uses aTDA4601 chip (IC801) and was clearly running flat out. Sowe looked at the control circuitry, centred around pins 1, 2and 3 of the chip. There are a couple of electrolytics here.C817 (10pF, 16V) had fallen in value to 51.1F while C818(11.1F, 50V) was low at 0.3µF. We replaced them, turnedVR801 to its mid -position and started the set up via a variac.The h.t. was now at exactly 110y. Pausing only to check thatit was adjustable, we boxed up the set and called it a day.

Book ReviewThe Satellite Book, third edition, edited by John Breeds.Published by Swift Television Publications, 17 Pittsfield.Cricklade, Swindon, Wilts SN6 6AN (0793 750 620). A vail-able from the publishers at £32 plus £2.50 postage andpacking in the UK.

The third edition of this well-known book has beencompletely revised and updated, with an expansion of thecontents. It covers a massive range of subjects relevant tothe satellite TV trade and has an established reputation. Theformat is A4 and the presentation is all you could wish, withlarge, clear type and plenty of diagrams and photographs.As before, the book is made to stand up to workshop wearand tear.

It serves two purposes, being a valuable reference sourcefor installers, lecturers, students etc. and also acting as anexcellent tutorial on the subject. Those in the TV trade willfind that everything they are likely to have to deal with iscovered, from the practicalities of ladder use to the intrica-cies of digital transmission systems. Those who for thepresent have fewer practical needs, students for example,will find their questions about reception characteristics,transmission techniques etc. answered. As an example of theusefulness of the book, installers will find it an ideal way ofdeveloping an interest in the more technical side of recep-tion. They will also benefit should they wish to move intoSMATV signal distribution.

The section on handling customers is relevant and worth-while. Some of the finer points mentioned are open todebate, but basically it's spot on. It is reassuring to find adetailed treatment of wall fixings. Many installers blindly goon using just one system regardless of different types ofbuilding construction. Rawlbolts are very popular, but theiruse can sometimes cause structural damage - where they areover -tightened for example. Essential reading then!

The one section I found disappointing was that on thetools of the trade. It struck me as over generalised andlacking in practical advice. Seasoned installers would ques-tion some of the points made here. Apart from this I'd highlyrecommend the publication to all those either involved insatellite TV or thinking of becoming involved. Nick Beer.

Next Month inTELEVISION

REPAIRING SATELLITE LNBsAlthough highly expensive test gear is requiredto service an LNB fully, it's possible to getmany a faulty LNB working with just a digitalvoltmeter and a good power supply. SteveRawlings has done just that with severalhundreds of them and passes on the knowledgegained.

TV FOR THE DISABLEDGeorge Cole on Audetel and Closed Captions,which help those with impaired vision andhearing respectively to follow what's on thescreen. Audetel adds commentary to explainwhat's happening while the Closed Captionssystem is used with videocassettes, working ina similar way to teletext subtitles.

SERVICING PC MONITORSAs a follow-up to his article in the August issueKen Taylor provides details of software thatproduces helpful screen displays, also informa-tion on the spares situation.

GUIDE TO OSCILLOSCOPESPart 2 describes the operation and use ofdigital storage oscilloscopes, reviews variousscopes suitable for service work and providesbrief specifications for a representative selec-tion of models.

CAMCORDER FAULT NOTESKeith Keeton supplies fault notes on the SonyTR50, TR105 and TR705 camcorders.

THE OS -CONWhatever next?! Sanyo has developed anorganic semiconductor electrolytic capacitorthat offers a marked performance improvementcompared to conventional types. EugeneTrundle describes the device, its characteristicsand uses.

ORDER FORM

To(Name of Newsagent)

Please reserve/deliver the Decemberissue of TELEVISION (£2.20), on saleNovember 16th, and continue everymonth until further notice.

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1


CamcornerPanasonic NVMS4

This camcorder was accused of being unreliable whenrecording. Apparently it would sometimes stick in pauseand sometimes shuffle and back space erratically. Aftersome hours had been spent testing the machine sure enoughwhen record pause was selected it unlaced, spooled back-wards, laced up again and then finally, after back -spacingunsteadily, it obeyed the original command. Heating andcooling the various systems and servo chips had no effecton the fault condition. After another spasmodic displaysuspicion fell on the mechanism mode switch. A replace-ment, part no. VSS0193, cured the problem. B.S.

JVC GRA1

The symptoms produced by this machine gave the impres-sion that the playback control pulses were missing: therewere cyclic noise bars on the picture, and use of thetracking control wouldn't alter them. The machine'srecordings played back all right in another machine.

We monitored the playback control pulse input to thedigital servo chip IC101. This only confused us as thepulses were present, stable, of the correct amplitude andfrequency etc. - at least as far as we could discern. Wethen recalled that these machines were amongst the first tohave a 'reverse -tracking' feature. This is intended toensure that the correct video head (A, A', B or B') readsthe track being played back. Without this feature picturewobble effects can occur, when for example head A readsa track recorded by head A'. The system modifies the dutycycle of the recorded control pulses, thereby enabling thetracks to be identified during playback.

The servo chip, in conjunction with the mechacon chip,checks the duty cycle of the control pulses and adjusts thecapstan phase to achieve correct tracking. In this case therewas a control pulse input to IC101, as mentioned above, butno playback control output at pin 29 to the mechacon chip.IC101 was faulty, a replacement putting matters right -thank heavens! D.C.W.

Ferguson FC27/JVC GRA1 /TelefunkenVM4300The reported fault was no tape transport. As with many ofthese JVC based machines, the loading rings had becomemisaligned. In addition - another common fault - themiddle guide pole assembly had broken off. A damagedintermediate gear, which had to be replaced, was the causeof the misaligned loading rings. This is quite a job. Thedrum assembly and most of the deck guide rails etc. haveto be removed, and the loading rings have to be lifted offthe main deck to give access to the gear. Refitting involvescomplete mechanism alignment and timing. As with allmechanisms, the Sony Mode Box is invaluable whenchecking for correct operation. D.C.W.

Sanyo VMD9PThe complaint was of "intermittent and unwanted deckfunctions". This recent model uses the Sony A mechanismand required a new mode switch to settle down. The Sony

Reports from Brian Storm andDavid C. Woodnott

mode box and leads help with this type of problem asincorrect mode -switch functions are indicated visuallywith LEDs. D.C.W.

Mitsubishi HSC35BThis is the model with the colour viewfinder known as the`Truefinder'. The display is produced by a colour -filterdisc that revolves in front of a monochrome c.r.t., not byan LCD panel. The disc is driven by a small motor and issynchronised to provide correct colour registration. Agreat deal of digital processing is involved: the circuitryused for this occupies most of the interior of theviewfinder case. The digital PCB sits above themonochrome c.r.t. and its scanning and video circuits.

The problem with this one was that the viewfinderpicture occasionally shifted sideways and jittered. The E-E picture displayed on a monitor was unaffected: only theviewfinder picture 'twitched'. Various checks werecarried out on the scanning and video PCB, to no avail.All the viewfinder circuits are supplied by a 5V line thatcomes from the main VTR power supply. This rail has toprovide quite a heavy current, around 350mA. A checkhere showed that under the fault condition the voltagevaried from its normal 5V by about 0.2V. So was theviewfinder overloading the supply, or was the supplyfaulty?

The answer was obtained by using a separate supply forthe viewfinder. This proved that the cause of the troublewas in the power supply in the camcorder body. The mainitems in the regulator are IC901 and a large transistor,Q901. As the fault was intermittent I decided to replace allthe components in this circuit. This put an end to thetrouble. D.C.W.

Sanyo VAR3OB

This adaptor is used with Model VMHIOOP. It had nooutput and wouldn't charge a battery. The faulty items thathad to be replaced were F102, the 85°C thermal fuseRR201 (4A) and T I (1.25A glass). Strangely the choppertransistor was all right. D.C.W.

Sharp VLC690

Playback was all right with this C -format camcorder but theE -E pictures were very weak - in fact there was an imageonly when the camcorder was used outdoors. Avectorscope check showed that colour information waspresent, but a scope display didn't show any luminancesignal. So we checked through the luminance signal pathand found that IC203 (MSM6850M) was the cause of theproblem. This I H delay line type of chip, like similar onesin other makes, seems to be a common cause of loss ofsignal. D.C.W.

Toshiba SK6OP/JVC GRC7

There was no viewfinder picture, just field collapse. Wefound that the height control VR3 was open -circuit. D.C.W.


actronici. uppfier.,

B.K. TESTThe Test Equipment Division of

B.K. ElectronicsUnit 1 Comet Way Southend -On -Sea,

Easex, SS26TR.Tel.: 0702-527572 Fax: 0702-420243

FOUR -IN -ONE INSTRUMENT =Li0All in one bench tee .= instrument with frequency counter,autoranging digital multimeter, 3 D.C. power supplies (2 fixed &1variable) and function generator, integrated into one compactand lightweight unit with full overload protection. Ideal for usein laboratories, education, production lines or research anddevelopment environments with its simple and easy operation.

FREQUENCY COUNTERRange: 1Hz -100MHzDisplay: B Digit LED

FUNCTION GENERATOROutput Waveforms:

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Frequency 0.02Hz - 2MHzOutput: 0.1Vpp - 20VppPlease Note:- It is not possible to0t all of this nstrument's functions andiecifications above. A detailed leaflet is

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The Metex M3550 is excellent value formoney and is packed with so many featuresthat only a few can be included here.The M3850 is an autoranging DMM,but also includes a frequency counter,thermometer, capacitance meter, logicprobe, diode check and transistor hFE.Also, the M3B50 can communicate with aPC using the software and leads provided.The M3B50 is suppied complete with acarry case, test leads and a manual.DC VoltsAC VoltsDC CurrentAC CurrentResistanceCapacitanceFrequencyTemperature

0-1000V0-750V0-20A0-20A0-40M0-400uF5Hz - 40MHz-40 - *1200 C

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OTHER HAND HELDSCAPACITANCE METER DM90239 Ranges Opf [with set zero) to 20,0000F * Large, 3.5 Digit,lEimm LCD DisplayPrice: £57.90 £10.13 V.A.T.LCR METER LCR1953.5 Digit LCD Display * 7 Capacitance Ranges 0 - 200uF* 6 Inductance Ranges 0 - 200H * 7 Resistance Ranges0 - 2001V1OhmPrice: £57.90 £10.13 V.A.T.FREQUENCY COUNTER (SAGE) 9C1305Hz -13GHz * S Digit LCD * High Cr'* Freq. -Period-Count-RPM-Min-Ma* Data Hold *Hlgh Accuracy.Price: £109.00 + £19.09 V.A.T.MICROWAVE OVEN LEAKAGE DETECTOR PY-13Complete with Probe * Detects microwave leakage arounddoors and seals Positive indicatior of beak with Meter -

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KENWOOD TEST & MEASURINGINSTRUMENTS

FM -AM Signal Generators * Colour Pattern Generators * Video Signal Analyser *Video Timing Analyser * Video Noise Meter * Distortion Meter * Waveform Monitors* Vectorscopes * Audio Generators * Wow and Flutter Meters * ElectronicVoltmeters * Digital Multimeters * Function Generators * Frequency Counters *Bus Analyser * Resistance Attenuator * Oscilloscopes * Fully Programmable Digital

Storage OscIloscropes Regu ated D.C.Power SuppliesThe following is just part of the vast range of Kenwood equipment, all of whichis available from B.K. Electronics. A full catalogue and price list is available onrequest.OSCILLOSCOPESCS 1305 5MHz,1Channel, Low CostCS 4025 20MHz, 2 Channel, General

PurposeCS 4035 40MHz, 2 Channel, High

Brightness. General PurposeCS 5260 60MHz 3 Channel, B Trace,

High Performance with Cursors(PAL & NTSC) Synch. Circuit

CS 6040150MHz, 4 Channel, 10 Trace,Htgh Performance, Multi -featured

CGS 8200 50MHz Real - 20Ms sDigital 2 Channel

WAVEFORM MONITORS S.VECTORSCOPESCV 1255 Vectorscope PALCV 1245 Waveform Monitor PAL(NTSC Versions of above are available. ROA.)SIGNAL GENERATORSG 5110100KHz - 110MHz AM. FM

Standard RF Generator (FM Stereo)COLOUR GENERATORSCG 932 PAL Colour Pattern Generator,

Video & RF 0,Ps, Calibrated & AdjustableLevels, Interlaced and Progressive Scanning,

Full Range of PatternsCG 922 Battery Portable PAL Pattern

Generator, Video. RF and Sour°Outputs, Full range of Patterns

AUDIO GENERATORSAG203A 10Hz to 1MHz Low Distortion

-riAud2; Generator, Sine & Shoare wave'

DON'T FO/qGET - 77 -1E -REA RE LIVER100 KEA/WOOL:I MODELS

AUDIO GENERATORS (Cont.)AG25210Hz to 1MHz Ultra Low

Distortion 0.004./0, Full Attenuator O'P,ELECTRONIC MILLIVOLTMETERSVT 171 AC Millivolt Meter, 1mV - 300VVT 176 Dual AC Millivolt Meter, 0.3mV -100VGENERAL PURPOSECL 7113.5 Digit Auto Bench Portable

Multimeter. Approx 3000 hrs BatteryFO 273 Sweep Function Generator, 0.2Hz - 2MHzFG 759 Frequency Counter1.3GHzPOWER SUPPLIESPO 35-10 0 to 35 Volts, 0 to10 AmpsPR 19-3A 0 to 1B Volts, 0 to 3 AmpsPS 20-54 0 to 20 Volts, 0 to 54 Amps

K ENWOOD PRICE LISTCO 1305 £210.00 £36.75 V.A.T.CS 4025 £359.00 £62.83 V.A.T.CS 4035 £565.00 £98.88 V.A.T.C S 5260 £1,195.00 £209.13 V.A.T.CS 6040 £2,395.00 £419.13 V.A.T.DCS 8200 £2,499.00 £437.33 V.A.T.CV1255 £2,249.00 £393.58 V.A.T.CV 1245 £1,599.00 £279.83 V.A.T.SG 5110 £1,825.00 £319.38 V.A.T.CG 932 £735.00 £128.63 V.A.T.CG 922 £445.00 £77.88 V.A.T.AG 203A £195.00 £34.13 V.A.T.AG 252 £399.00 £69.83 V.A.T.VT 171 £235.00 £41.13 V.A.T.VT 176 £475.00 £83.13 V.A.T.OL 711 £149.00 £26.08 V.A.T.FG 273 £450.00 £78.75 V.A.T.FC 758 £555.00 £97.13 V.A.T.PO 35-10 £645.00 £112.88 V.A.T.PR 18-3A £235.00 £41.13 V.A.T.PS 20-54 £1,510.00 £281.75 V.A.T.

U.K. POST PAID. Export enquiries welcome. Visa Mastercard or cheque with order, payableB.K. Electronics. Official Orders welcome form Govt. Depts., Colleges, PLCs etc. Technical leafletsand price list for the complete range are available on request. Credit card orders are accepted bypost, phone and fax.Despatch is subject to payment clearance (10 days for cheques).

VISA


A Z ELECTRICS183 ACRE LANE, NORTHAMPTON NN2 8DX

Telephone/Fax: (0604) 841871Stock items despatched by returnVIDEO HEADSAmstradTVR1, 2, 3, 4, VCR4500, 5200, 4600, 4700, 6000, 6100,81600, 9000, DD8900, 8904 etc E14.00

Ferguson/NCUniversal 2 Head many models E7.508950, 8951, 3V64, 3V65, FV10, 11, 20, 21, 22, 26, 30 etc

£14.50FV31, 14, 1IRD210, 211,520, 540, 550 etc E17.50

HitachiV1130, 135, 250, 420, 425, 430, 530, 630 etc 022.00VTVT100, 110, 120, 220, 400 etc £19.00VT52, 60, 61,63, 640 etc £16.00VTI 1, 33, 6500, 8000, 9300 etc f14.00Matsui/Satoh°VX730, 750, 735, 755, 990, VR2000, 3200, 3300. 3500.3600 E18.00

PanasonicUniversal 2 Head many models E7.50NVG130, 30, 40, NVJ30, NVL20 etc E17.50NVG33, NVJ35, NVL25 E22.50

SharpVC9300, 381, 481, 500, 571, 600, 682, 772, VCA100,105, 106, 202, VCD801, VCM73, T72 £14.50Not II models are shown for each make. A vest rangeof other makes & models i.e. Akai, Albe, Aiwa, Fidelity,Fisher, Rossi, GEC, Goldstar, Granada, Grundig,Orion, Philips, Sanyo, Sentra, Proline, Salors, Sony,Samsung, Toshiba & Mitsubishi are availableIDLER ASSEMBLIESAkaiFFIRew Idler VS1, 2, 0, 5, 6, 9,15 £3.45Take up Idler VS1, 2, 4, 5, 6, 9, 15 £4.45Clutch Assemb. VS112, 105, 125, 165, 205 £10.00Cassette Housing Repair Kit VS 22, 23 £10.50Alignment Training Tape VS22 etc £15.00

AmstradTape Creasing Kit VCR4500, 4600, TVR1 £5.00

FergusonTake up Idler 3V29, 30, 35 etc £1.20Reel Idler 3V29, 30, 31, 32, 35, M, 38,39 13.00Take up Clutch 3V29, 30, 35, 36, 38, 39 E2.115

Idler Arm 3V58, 59, 65, FV10, 11, 13 etc £2.25Cam Control Gear FV37, 43, 44, 46 . E2.75Cap Motor Cog Repair Kit FV37 etc E3.50

FisherIdler Assembly FVHP615. 715. 905 etc £5.00Gear Idler Assembly for above models E4.50

HitachiFFIRew Idler VT11, 10, 33,64, 88 etc £2.50Clutch Assembly VT11, 14, 33, 64, 88 etc £9.50Idlers for earlier models in stock alsoPanasonicIdler Arm Unit NV370, 430, 830, G7, 10 13.50Idler Unit NV332, 777, 780 13.00All G Mechanism Parts & Kits availableG Mechanism Training Tape E15.00

SanyoIdler VHR1100, 1300, 1500, 2100,2500 E5.50

SharpIdler Assembly VC9300, 381,481, 581 £3.50Idler Assembly VC651, 751, 781 etc £6.50Master Cam VC651, 772, VCA100 etc £1.50

MISCELLANEOUS MAKESALBA- MOTOR PULLEY 4000 £1.20

Idler VCR5000, 6000 ............. ..... E3.50Goldstar- Idler GHV51, 1221, VCP4000 ..... £3.00NEC- Idler N9013, 9033, 9053, 9066 ..... 16.65Philips- Idler Mod. - VR6462, 6463 ............ 14.50Samsung- Idler VI510, 520, 620, 626. 61.50

Idler Assemb. VB710, 790 £9.75

Not all the models are given under each make.Please ask for models & makes not listed.

VIDEO MOTORSFergusonCapstan Motors 3V35, 36, 38, 39, 49 ............. E21.00

FV14, 26, 29 . £33.00

HitachiCapstan Motors- VT11, 14,17, 38, 39 ....... . £30.00

VT33, 34 £32.00VT62, 63, 64,640, 65 122.75VT100, 110, 220, 225 122.00

SharpReel Motors- VC200, 381, 481, 581, 9300 £21.00

Sharp Reel Motor Pulley £1.20

ToshibaCapstan Motors -V71, 73, 74, 81, 83, 85 E17.50

V53, 55, 57 ......... . E21.00

PINCH ROLLERS & BELT KITSA large selection of pinch rollers and belt kits for mostmodels are in stock. Belt kit prows start from 40p andmost of the pinch rollers are priced to 02.80. Pleaseask for list.

TRIPLERSUniversal Tripler £6.20Universal Tripler with Focus Urit £9.50Decca 120/130 Serves ..... . ..... ..._....................... E8.50

Thorn TX10 Focus Unit ... ......... ......... £6.50Grundig Triplets POA

REPAIR KITS - TV/SATELLITE/VIDEOAkai - Power Board VS22, 23 etc .............. £28.00

Amstrad-PSU Kit PRD500, 510Satellite E7 00

Ferguson - PSU Kit Video Thomson Chassis E7 00

11T -Pico 1/1A Chassis Et 1 00

Philips - PSU Kit Anubis "A' Kit .. ......... £8.50PSU Kit G110 Chassis ... ........... £12.00PSU Kit G90AE/39013 Chassis ....... f 11 00PSU Kit Philips Video ......... ..... .......... £9.00

Pace - PSU Kit 8009, 900, 8000, 9000 £7.00Panasonic - G Deck genuine kits in stockSharp- Cassette Housing Kit VCA113 Series E6.50

A wide range of maintenance kits also in stockLINE OUTPUT TRANSFORMERSFidelity -Up to 20' ZX2000, 3000 £14.50

Ferguson - TX100 Green Spot £14.50TX100 Blue Spot £10.50TX100 Yellow Spot E19.50TX90 State Screen Sae £17.50Ask for models not listed

Hinari -CT4/5, TVAI E17.50

Hitachi - CPT1476, 2174, 76, 78 08.00CPT2276, 2476, 78 E19.00Ask for models not listed

Matsui -1440, 420 E19.00

ITT CV25/30/32 E9.50Compact 80.110 £16.75

Compact 80, 90 . ............ £19.75CVC1204 £11.50CV800/1/3CVC1100

........... 121.£1&5500

CVC1150/I175 E20.00Ask for models not listed

Pansonic -Originals From £15.50Sony - Please quote Sony part No. for priceOther makes & models in stock. Nesse ask.

BACK UP BATTERIESPhilips 1.2V Back Up Battery ......... ........... 11.75Philips 2.4V Back Up Battery £2.80Ferguson TX10 1.2V £2.10Ferguson TX10 2.4V E3.850.1 Farad 5.5V Capacitor E1.85

State model and make for television on off switchesand video mode switches.

OTHER SPARESHitachi TV Frame Module HM6251 E8.00Hitachi TV Frame Module HM6232 E10.00Degausing Positor White £1.30Degausing Positor Blue £4.00Degausing Positor Philips E3.00Degausing Positor Hitachi E3.40End Sensors Hitachi VT63, 64 etc E2.75IC Circuilt Protectors Most Values £0.60Matsui Limiter Post £1.75Clear Service Cassette 15.901994 TV Fault Guide E12.001994 Video Fault Guide £9.00Satellite Fault Guide E15.00Akai Alignment Training Tape £15.00Panasonic G Mechanism Training Tape £15.00

SATELLITE SPARESLNB 1.2DB Standard or Enhanced 121.00Frequence Extender for 1D Reception on mostreceivers (Excluding LNB) £25.00TV/Video and Swaim %mom Controls start hen E7.50

A large range of Semiconductors in stock. PopularSTKs. STR5, TAs, TDAs, 2S138, 2SCs, 2SDs, BUS, BDsand many more types.Fuses - Anti Surge Time Lag 20mm pack of 10 f 1.00each. Blow 20mm pack of 10 E0.50 each.Idler Tyres for popular makes in stock for as little as35p sad,.

Prices subject to change without notice. Please add £1.25 per order for p&p and then add 17.5% VAT.POSTAGE VARIES ON HEAVY ITEMS. SEND A4 SAE FOR LIST (MAIL ORDER ONLY)Cheques and Postal Orders should be crossed and made payable to A.Z. Electrics

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TeletopicsSatellite TV

Philips demonstrated a complete MPEG-2 standard digitalvideo distribution system for broadcast use at the recent IBC:signals sent via the Telecom 1C satellite were decoded andplayed back in real time using standard IRDs. A digital IRDfor cable use has also been developed.

European digital TV test transmissions via satellite are tostart by the end of the year: SES (Astra), Eutelsat andDeutsche Bundespost Telekom have offered the DigitalVideo Broadcast group the use of transponders and facilitiesfor the purpose.

The NTL VCS4000 MPEG-2 digital TV transmissionsystem is now available commercially - the first of its kind. Ajoint venture between NTL and Pace expects to havedomestic decoders for use with the system available earlynext year. Hong Kong based, News International ownedbroadcaster Star TV is to start a direct -to -home TV serviceusing the system in mid -1995.

Toshiba has entered the UK satellite receiver market withModel TS540, which with 60cm dish is to retail at around£300. Grundig Satellite Communications has introduced amodel that breaks away from the traditional black -box look:the GDR250P has a mahogany wood effect finish, user-friendly on -screen menus and handset for ease of use and a6dB tuner threshold which ensures excellent performanceregardless of weather conditions.

RTL Television is now available via Eutelsat II Fl at 13°Eon transponder 33V (11.596GHz), in the clear with German -language sound.

Cable & Satellite 95 will be held in the Grand Hall,Olympia on April 3rd -5th 1995.

Discs and Disc Systems

Philips has signed a distribution deal with Video CollectionInternational to release ten Video CD titles; CD Vision is tolaunch around fifty Video CD titles before Christmas, pricedat £10-13 each; Philips has released, for the first time simulta-neously, a VHS/Video CD title, The Firm; and a number ofJapanese manufacturers are about to introduce Video CDplayers, in their home market initially. But the technology ismoving ahead fast.

There was a brief reference in this column last month tothe "next generation of video CDs". What Philips,Matsushita, JVC, Sony and the others have developed is alonger -playing CD-ROM known as High Density CD(HDCD). The discs have about four times the storagecapacity of current discs and can store around 140 minutes ofMPEG-2 video. Thus a single disc will have sufficientstorage capacity for most films and will provide far betterquality than Video CD, which uses MPEG-1 digital videocompression. HDCD discs and players are expected to beavailable in about two years' time. Naturally you won't getall this extra for nothing. The players will be more expensive,since one technique that's being used to increase the storagecapacity is a variable bit rate, 2-8Mbits/sec, depending on thescene content. Where there's little detail the lower rate can beused, while with fine, rapidly changing detail the faster rate isused. The average bit rate is 3-4Mbits/sec. Thus the discspeed has to be varied, complicating the servo systems. A redlaser with a wavelength of 635nm is used instead of an infra-

red laser (wavelength 790nm). So a better quality lens isrequired.

Looking farther ahead -a lot farther - Matsushita claimsto have developed a CD-ROM disc with a storage capacity of4Tbytes, about 6,000 times the capacity (650Mbytes) ofcurrent CD-ROMS. This would enable a full-length movie tobe stored in a space of just 0.2 sq. cm. This high density hasbeen achieved by adopting the technology used in atomicforce microscope probes. which can build structures on anatomic scale. The storage technology is still in the experi-mental stage, and it could be a decade before commercialproducts that use it appear.

Meanwhile Pioneer has announced the development of ablue laser (wavelength 400-500nm) capable of reading high -density optical discs at room temperature. The blue output isobtained by passing the output from a red laser through a half -wavelength second harmonic generation element composed ofphosphoric titanic kalium. This yields a 425nm output. It'sexpected to be four -five years before the laser becomes avail-able commercially.

On the interactive disc front, the 3D0 consortium hasannounced that the products are designed to be upgradable fromthe start. The first upgrade will enable MPEG-1 Video CDs tobe played. Late next year a 64 -bit microprocessor upgradecalled the M2 Accelerator will boost the performance signifi-cantly. It will feature a customised PowerPC microprocessorand will have multiple custom graphics and sound processorsdesigned by 3DO. Matsushita, IBM and Motorola are involvedin the development work. The operating system remains thesame, giving compatibility with current discs. 3D0 points outthat it is common to upgrade PCs and there's no reason why theprinciple shouldn't be applied to other products.

Developments

A paper delivered at the International Broadcasting Conven-tion by researchers from De Montford University, Leicesterdescribed a full -colour three-dimensional TV technology thatthe team believes could be developed into a practical system.It should produce a full -parallax effect, i.e. by moving yourhead you can look round the image. The display would have avertical resolution of 1,536 lines and a horizontal resolution of2,048 pixels, requiring a transmission rate about one and a halftimes higher than that needed for conventional HDTV. Acomparatively modest data compression ratio of 16:1 wouldenable this to be transmitted by current methods.

The imaging system would use arrays of large and smalllenses, the finest arrays having a lens spacing of 125 microns.The theory has been around for some time but it has onlyrecently become possible to produce planar arrays with a suffi-ciently fine pitch. For display purposes an LCD system wouldbe used in conjunction with a lens system that has a 1.25mmpitch.

All that is probably many years away, if at all. On a morepractical level Sharp has demonstrated a 21in. wide thin-filmtransistor (TFT) LCD that has 640 x 480 (921,600) pixels witha dot pitch of 0.222 x 0.666mm and can display up to 16.7million colours. No commercial launch date has beenannounced.

Sharp has launched on the Japanese market a video modem,called the Teleport, for nse with its ViewCam camcorder. TheTeleport enables users to send and receive still colour picturesvia an ordinary telephone line. JPEG compression is used toreduce the data rate, and the user can select three transmissionspeeds (detail, normal and plain). These take around twenty,eleven and eight seconds respectively. The Teleport has amemory that can store up to ten images. Screen resolution is384 x 240 pixels, with 8 -bit colour (256 colours).


A Serviceman's Guide toOscilloscopesPart 1

In the early days of radio few service departments possessedan oscilloscope - then usually called an oscillograph. Theseinstruments spent most of their time on the shelf. Occasion-ally an engineer would dust off the oscillograph for a bit ofsignal tracing in radio circuitry or to check distortion in anamplifier. They were heavy instruments, massively built, andused valve technology.

The oscilloscope came into its own with the advent of tele-vision. Complex waveforms needed to be examined, and thescope was the only instrument that enabled them to beobserved. Oscilloscopes made rapid headway in TV servicedepartments.

Without an oscilloscope it's not possible to set up andservice today's hi -tech TV sets, VCRs, camcorders andcomputers properly. Correctly used and understood, themodern scope enables the engineer to see exactly what'shappening in the circuitry of these complex pieces of equip-ment.

The latest generation of scopes use improved technology,giving performance and value for money that would haveseemed impossible just a few short years ago. If you'rethinking of buying a new scope, this article should help youto select a state-of-the-art instrument that's right for yourservicing needs.

Basics

Scopes use electrostatic deflection to control the positionof the beam as it traces out the waveform displayed on thescreen, see Fig. 1. The X plates control the horizontal scan-ning of the beam while the Y plates control its vertical move-ment. A signal being measured by an oscilloscope is

displayed as a function of time, see Fig. 2. The waveform'svertical axis indicates the amplitude of the voltage applied tothe Y plates while the horizontal axis indicates the time

Drive, e.g.sinewave signal,to Y plates forvertical deflection

103821

Sawtooth driveto X platesfor horizontaldeflection

X plates

- -iwScreen

V plates

Fig. 1: The electrostatic deflection system used by scopetubes to display waveforms.

Voltage A A AIF V.01 sec -I

Fig. 2: The display is a function of time. A 100Hzsinewave is shown here.

20

Time

103831

David Botto

between successive cycles of the signal applied to the Yplates.

In this way the oscilloscope provides a graphical represen-tation of exactly what's happening in an electrical circuit, byresponding to fast changes in signal levels and waveforms.

Regular readers will have a reasonable understanding ofoscilloscope circuits. For the benefit of newcomers and thosewho may be a little rusty on some points however we'llprovide a quick review of the basic principles.

Block DiagramFig. 3 shows in block diagram form the basic elements of

an oscilloscope. It is largely self-explanatory. The operatingprinciples remain the same whether valve or solid-state tech-nology is used.

An alloy shroud, typically Mumetal, helps to protect thec.r.t. from disturbance by external magnetic fields. AsMumetal consists of approximately 78 per cent nickel, it has ahigh magnetic permeability. In our block diagram the e.h.t. isshown as -1kV, i.e. negative with respect to chassis. With up-to-date designs you'd expect an e.h.t. of 16kV or greater.VR3 is an astigmatism control, which is used to obtain thesharpest possible convergence of the electron beam at allpoints on the face of the monochrome tube screen. VR4 is thefront -mounted brightness control and VR5 the focus control.

The calibrated horizontal sweep generator (timebase oscil-lator) can be adjusted to give different sweep speeds. SwitchSW5 selects the range. The output is a linear sawtooth rampwaveform. As with a TV display, we don't want to see thehorizontal flyback. A blanking circuit senses the falling edgeof the sawtooth waveform and cuts off the beam during theflyback period.

The X output stage provides the required push-pull drivefor the tube's X deflection plates. An external signal can befed in via the X input socket: for some applications it's desir-able to be able to deflect the beam both horizontally and verti-cally from external sources. VR6 enables the horizontal traceto be centred.

Note that there must be an ohmic path between eachdeflection plate and the tube's final anode. If there isn't, thescope produces strange, fuzzy waveforms.

The Y input socket is the normal signal input. This isfollowed by a.c./d.c. input coupling selection then switchedattenuation.

The sweep generator can run freely at the frequencyselected by the sweep range switch or operate in the triggeredmode, and can be triggered from an external or internal signalsource. SW3 and SW4 select these modes of operation. Whenthe sweep generator is triggered internally, by the signal inthe Y channel, each horizontal ramp will start at the samepoint along a repetitive input signal waveform. For cleanoperation the trigger signal requires some processing.

The arrangement shown in Fig. 3 serves to illustrate basicoscilloscope principles. Such an instrument would be easy tobuild but would be of little or no use in today's high-techTV/video service department. Nevertheless the principles

TELEVISION NOVEMBER 1994

SW2

Y input

I nt

E t

Ex t.trigger

AC

DC

SW1Switched

attenuator amp

X input

Processing

Free -running

-0 SW4Trigger

VR6 Triggerlevel

z 5W6

Bufferamp

Horizontal sweep generatorand

amplifier

Youtputstage

Vertshift

VIR1

SW5 O

Sweeprange

VR7

X

outputstage

Finefrequency

Horizshift

VR2 VR3

HT

Astigmatism

Y plates

IH.2 plates

0

5W7EHT ineg)

Power HTMains a. t. I supply LT+P

P LT

Blankingpulse

generator

Fig. 3: The basic elements of an oscilloscope, shown in block diagram form.

outlined here are found in one form or another in the modernoscilloscope.

The Y AmplifierBarely ten years ago a Y amplifier bandwidth of 6-10MHz

was considered adequate. Today a virtually flat response fromzero to 20MHz is generally considered to be the minimumrequirement. An oscilloscope that meets this specificationwill, at present, handle satisfactorily most if not all of thesignals found in today's TV sets, VCRs and computers. Bearin mind however the rate at which the technology isadvancing. Because an oscilloscope represents a major invest-ment it will have a long workshop life. So you may considerit worthwhile purchasing an instrument with a Y channelresponse of zero to 50MHz or better.

The input signal amplitude that produces one graticule ofvertical deflection is defined as the vertical (Y) input sensi-tivity. For example a setting of l0mV per division(10mV/div) will produce one graticule division of verticaldeflection for each 10mV amplitude change of the Y input.Accurately calibrated Y input attenuator switches enable themodern oscilloscope to handle signal input amplitudesranging from a single microvolt to many volts per division. Ahigh Y input impedance is desirable.

Another important factor to be considered in the design ofa Y amplifier is its rise time, see Fig. 4. Rise time is definedas the time taken for the beam to rise from the ten per centcalibration mark on the graticule to the 90 per cent mark. Ifthe rise -time response of a Y amplifier is poor the signalobserved will suffer a degree of distortion. This applies espe-cially with squarewave and digital signals. A top-qualitymodern analogue oscilloscope such as the Tektronix TAS465has a Y amplifier rise time of less than 3.5 nanoseconds.

Scope Probes

The Y amplifier is connected to the circuitry being testedvia an isolating probe. This prevents the Y amplifier loadingthe signal source, with possible waveform distortion. The

VR5Focus

0EFIT-1kV

VR4Brightness

[D3841

purpose of the probe is to present a high input impedance tothe signal. It normally incorporates a divide by one and by tenand maybe by a hundred attenuator switch. A quality probewill enable signals in the MHz range to be handled, some-times as high as 300MHz or more.

It's vital to purchase probes that match your scope. Ageneral rule is that the frequency range of the probes shouldbe much wider than that of the scope. New scopes generallycome complete with the necessary probes.

Dual- and Multiple -beam Scopes

The arrangement shown in Fig. 3 produces only a singletrace on the screen. Often additional information may berequired on the screen, or a simultaneous comparison of two

Voltage

103851

100%

90%

50%

10 i

Signal response of tubeand Y amplifier to asquarewave input

Time

Voltage BIX input)

Fig. 4 (left): Illustrating rise time. Fig. 5 (right): XYoperation produces a graph of two voltages.


Ch.1 input Ch.1att en.

Ch.1Y amp. Electronic

switchDelayline

driverDelayline

Ch. 2atten.

Ch.2Y ampCh. 2 input

Ch. 1

Chop/altdrive

Ch. 2 Trigger Trig

SweepprocessingExt. trigger Ext.

gen. /amp.inputTrigger Autoselect

X input

outputstage

Fig. 6: Simplified block diagram of a two -channel analogue scope.

or more waveforms. Modern dual- and multiple -trace scopesuse electronic switching between the outputs from two ormore Y channels and the Y deflection drive system toproduce extra traces. Because of the effect known as thepersistence of vision, the traces produced by this switchingbetween inputs can be viewed with no apparent flicker.Advanced instruments may produce multiple traces, but fornormal servicing requirements two traces are sufficient.

A dual -trace scope has twin vertical (Y) inputs. There aretwo basic methods of switching the signals electronically,referred to as the chopped and alternate modes. At lowerfrequencies the chop mode, as it's usually labelled, is best. Inthis mode the electronic switching selects one input then thenext then back to the first and so on at high speed to producethe two separate, distinct traces: in effect sections of eachwaveform are displayed in turn, the waveforms being`chopped'.

At high frequencies the chop rate may be less than thevelocity of the signals. As a result 'holes' appear in the traces.The alternate mode is then better: one complete trace isdisplayed, then the other complete trace, repetitively. Againthe eye sees the traces as two distinct and permanent displays.Many models incorporate circuitry that can select either thechop or alternate mode automatically to suit the -signals.

Features of Modern OscilloscopesThe modern oscilloscope incorporates numerous sophisti-

cated features that are invaluable when servicing advancedequipment. Laboratory -quality wideband Y channels, delayedand dual timebases, superior triggering circuitry andadvanced plot and print facilities are examples. Instant func-tion and range selection by push or touch buttons save theuser much time. They eliminate the fiddling and messysetting up that was commonly required with older scopes.Models such as the Tektronix TDS544A and TDS644A showvarious waveforms in contrasting colours.

Until recently many of these features were available onlyat a cost that put them far beyond the resources of the servicedepartment. As a result of rapid advances in the technologyand falling prices however this situation has changed: you cannow get far more for your money.

Some top of the range scopes respond to inputs from zerofrequency (d.c.) to an upper limit as high as 2GHz. But thehigh cost makes them uneconomic for servicing applications.

When choosing a scope it's a good idea to make sure thatthe Y channel bandwidth is at least five or six times greaterthan the highest frequency signal you would normally expectto encounter. If you display an 8MHz waveform using ascope with a 10MHz bandwidth for example the trace may

22

X

outputstage

Drive to Y plates

Drive to X plates

appear to be clean: display it using a scope with a 20MHz or50MHz bandwidth however and the trace may reveal distor-tion, overshoot and other problems not previously seen.Remember that when you can see the problem clearly it'smuch easier to find the cause of the fault.

X Deflection

The higher the frequency of the Y signal being displayed,the faster the horizontal sweep needs to be. Careful, precisiondesign is an indispensible feature of the modern sweep gener-ator. Older scopes usually calibrated the X deflection in termsof frequency: nowadays the calibration is invariably in termsof time. If the beam is set to move across one graticule divi-sion every 0.5msec for example the timebase speed is referredto as 0.5msec/div.

A delayed timebase enables you to view a single signal attwo different speeds. It does this by expanding part of thewaveform and starting at a point after the beginning of themain sweep. This is better than simply enlarging the display,since it enables any section of the main sweep to be inspectedwith any desired degree of horizontal enlargement.

Dual independtnt timebases enable you to view the samesignal simultaneously at different sweep speeds. For exampleyou can use one trace to view the complete video signal andsimultaneously magnify the same signal to see just a part of itas the second trace.

A sweep magnifier enables part of the waveform to bemagnified horizontally by times five, ten or more without theneed to change the setting of the sweep time. This is betterthan simply increasing the sweep speed, which could meanthat the part of the waveform you want to see is off thescreen.

XY Operation and Z ModulationIn the XY mode one input signal is fed to the Y input and

the other to the X amplifier. The display then produces agraph of the two signal voltages, see Fig. 5. The timebaseoscillator is not used. This mode is handy for checking coloursignal vectors: it's also needed for component tester use.

With Z modulation the signal is applied to the tube's gridor cathode to modulate the brightness. If properly synchro-nised field and line frequency signals are fed to the scope's Yand X inputs and a TV video signal is fed to the Z modulationinput you'll see a monochrome picture on the screen.

The Modern Analogue ScopeThe most popular type of scope for service use is the


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analogue type designed to view signals that vary smoothly andcontinuously. The latest examples offer an impressive range offunctions: many contain a microcontroller chip for automaticsetting up and ease of control, and instant push-button settingis now common. Some incorporate storage facilities, enablinga signal to be viewed after removing the input.

Fig. 6 shows a much simplified block diagram of a basictwo -channel analogue oscilloscope. The outputs from thechannel 1 and 2 Y amplifiers are electronically switched thenfed to the delay line driver. The output from the calibrateddelay line goes to the Y output stage. Without the delay line,the Y signals would arrive at the tube ahead of any signal fedto the X input.

With some modern scopes, for example the Hewlett-Packard HP54600 series, the input gain is automaticallyadjusted to match the signal level. Many scopes enable you tostore the front panel set-ups in a memory chip so that they canbe recalled at the touch of a button.

TriggeringTriggering enables the exact trace start time to be set. For

example you might wish to observe only a section of theinput waveform above a certain level, see Fig. 7. Front panelcontrols may enable the user to set the trigger level, thepolarity of the triggering (on a positive- or negative -goingsignal excursion) and the source of the triggering signal .Trig-gering ensures that the signal(s) being displayed are lockedand easy to view. Most engineers have experienced theannoyance of losing the trace when working with older trig-gered scopes. To avoid this nearly all modern scopes have abeam finder control: press a button and the trace position is

instantly revealed.V mode (or alternate) triggering enables each input signal

to provide its own triggering.

Voltage

Trigger point

Not displayedon screen

fM1

Presettriggerlevel

Section of waveform displayed

Fig. 7: Ilustrating triggered operation of the horizontalsweep. The trigger level is preset.

Time

Scopes specifically designed for TV service departmentuse sometimes feature TV horizontal (TV/H) and TV vertical(TV/V) triggering - this is simply a switch -selected timebasesetting that's arranged to lock the scope to TV signals.

ConclusionA basic principle is that everything in the Y signal path

must operate exactly in step and at the same speed. With amodern wide bandwidth scope this means that the tube'sresponse must be the same or better than the input bandwidth.

In Part 2 next month we'll look at the basic working prin-ciples of the latest digital storage scopes, weigh the pros andcons of analogue and digital instruments from the serviceengineer's point of view, and take a look at some of thesuperior features in current scopes of both types.


The Panasonic Z4 ChassisPart 3

In this concluding article on the Z4 chassis we'll consider themain microcontroller chip, teletext and the scanning andprotection arrangements.

The Microcontroller ChipThe main microcontroller chip IC1213 is a Matsushita

MN1872419. It's similar to the MN1871611 used in theAlpha 3 chassis but has a few 'small -screen' set featuresadded and a few 'top end of the range' features taken away.The device contains 16Kbytes of RAM, 24Kbytes of ROM,has twelve digital analogue control (DAC) outputs, i.e. theoutputs are digital but they are used to control analoguefunctions, a voltage synthesis tuning DAC output, an 12Cbus system and a full on -screen display generator. Pin func-tions are as follows:

Pin(s) Function

1 Remote control input2-4 Keyscan 1-3 (on -board function selection)5-8 Options 1-49 Scart slow switch input10 Sound info input11 AFC input12 Chassis connection13 No connection14 Bass DAC output15 Treble DAC output16 Balance DAC output17 Loudness DAC output18 Ambience DAC output19 Secam white -balance DAC output20 Secam L/not DAC output21 Secam L' sound hi/lo DAC output22 5V supply input23 Colour DAC output24 Contrast DAC output25 Brightness DAC output26 Sharpness DAC output27 Chassis connection28 Nicam info input29 Scart fast blanking input30 IF stop input31 Video stop input32 S -video info input33 Bus switch output34 Video mute output35 PAL/Secam/auto mode output36 Nicam/f.m. select output37 Stereo/mono select output38 5V supply input39 Line pulse input40 Standby control output41 Blanking output42 Blue OSD output43 Green OSD output44 Red OSD output45 Volume DAC output46 Tuning voltage DAC output

Ray Meadows

47 Select u.h.f. output48 Select high -band v.h.f. output49 Select low -band v.h.f. output50 AV control 2 output51 AV control 1 output52 RGB contrast output53 Mute 1 output54 Reset input55 Field sync input56 Mute 2 output57 50/60Hz scan sense input58 AFC defeat output59 I2C data to EEPROM and text circuit60 I2C clock pulses to EEPROM and text

circuit61 5V supply input62 Clock osc 163 Clock osc 264 Chassis connection

Three chips are closely associated with the microcon-troller chip: the EEPROM chip IC1202, the reset chipIC1212 and the remote control receiver chip IC1131. An on-board push -switch control panel is connected to pins 2-4, andoption -selection resistor networks are connected to pins 5-8.Some unused outputs are left unconnected while unusedinputs are tied to chassis via resistors. Unused inputs includeNicam info, sound info and S -video info. S video is handledautomatically by the AV switch on panel B in sets that incor-porate this feature, so the microcontroller chip is notinvolved. The i.f. stop input is used to mute signals from thetuner when the AV mode is selected.

Most pins that are connected to the external circuitry areprotected from flashover damage by means of in -line chokes.OSD output pins 41-44, being a little closer to the action,have a T -section LC filter each. The video mute output at pin34 is tri-state, i.e. either logic high, logic low or highimpedance.

To simplify the connections to the on -board controlswitches multiplexed key scanning is not provided. Instead,the switches are connected to resistor chains so that depres-sion of different keys selects different resistance values. Thekeyscan 1 input monitors various user function keys (colour,contrast etc. and store), the keyscan 2 input monitors thetuning preset keys while the keyscan 3 input monitors themain user (volume and channel change) keys. Model variantoptions are set in the same way, i.e. by using resistors. Theseare read by the microcontroller chip to determine the set's`identity', i.e. whether it is a PAL or PAL/Secam set,whether it has a single- or triple -band tuner etc.

At power on or at any time when the voltage on thesupply line falls below 4.5V IC1212 feeds a logic low resetsignal to pin 54 of the micro to clear any erroneous data fromits internal memory. Tuning and consumer volume, colouretc. settings are stored in the EEPROM chip, which isconnected to the micro via an I2C bus. The remote controlreceiver chip, which is mounted on a separate panel, isconnected to the micro via a serial data line. These chips areall powered by the standby 5V supply so that they remain inoperation in the standby mode.


microcontroller chip. An external 8Kbyte static RAMprovides four pages of text memory. The circuit is verystraightforward and is shown in simplified form in Fig. 1.

The video input, with text, is amplified, peaked andbuffered by Q3513/4/5 before being fed to pin 8 of the IVTchip IC3501. This device contains all the processing neces-sary to produce RGB text signals from the composite videoinput. Control is provided by a Philips MAB8461PW216text controller chip (IC3507) which is connected to the IVTchip via an I2C bus. This bus is also linked to the mainmicrocontroller chip IC1213, but is isolated from it by theCMOS chip IC3508. Connection occurs only when textfunctions are selected. When this happens, IC1213 producesa low output at pin 33 to switch transistor Q3523 off and theI2C link is made via IC3508. Bus isolation reduces the riskof interference being conducted back to the main panel - thiscan be a problem with sets that have a v.h.f. tuner. It alsoprevents address contentions.

While the teletext interface circuitry is similar to that usedin the Alpha 3 chassis, the method of presetting the textcontrast is different. Q3506 and preset control R3514 set theinternal RGB reference voltage in the text character gener-ator ROM in IC3501. To improve text legibility in the textmix mode Q3502, which shunts R3915, is switched on by asignal from pin 20 of IC3501, adjusting the reference level.The same control signal simultaneously reduces the videocontrast level by pulling down the output from the sub -contrast control.

There's three -speed sweep tuning, the sweep speedincreasing when signals are not found. It can vary from45kHz per step when search is initiated through 80kHz andup to 170kHz per step until a signal is detected. The videostop input (see Fig. 4 last month) then appears and the searchsweep ends. When the digital value representing the selectedfrequency has been stored in the EEPROM a.f.c. is applied.The use of voltage -synthesis tuning means that directchannel access is not available.

The micro's 24Kbytes of ROM are more than enough forthe programme code and self -test routines. Hence the inclu-sion of the on -screen calculator, calendar and 'mood light'.Personally I find a calculator that can be operated via the TVset's remote control unit rather useful, also the calendar. Themood light makes the Z4 the only chassis that can check itsown purity! It makes for an interesting window display,especially if different sets are displaying different 'moods'.

The microcontroller chip is very reliable. If a fault issuspected, first check the clock module (X1210) connectedto pins 62 and 63. Failure of the set to come on is more oftencaused by a fault in the standby supply. In this event checkR1283 and D1208 (see Fig. 4, Part 1). The same fault occurswith the Alpha 3 chassis.

TeletextThe chassis uses the Philips IVT two -chip teletext

decoder which consists of the IVT text decoder chip and a

From IC1213+ve

5V

From 1C1213pin 33

To contrastcontrol circuit

IC350117IVT

Address(AO-Al2

IC3506SRAM

Fig. 1: Simplified circuit showing the basic teletext decoder arrangement.

R3564

To RGBswitching chip1103301)

03781


Comp sync

from 10521

50 60Hz

from IC1301

12V0

30

3

Q403 Q404

oscV

R46160Hzfieldhold

R40350Hz

fieldhold

Vdrive

33

1C451

Fig. 2: The sync circuitry.

Synchronisation

Composite sync signals from the sync separator chipIC521 are fed to pin 30 of the video processor/timebasegenerator chip IC601, see Fig. 2. This device strips off andseparates the line and field sync pulses internally. A controlsignal from the 50/60Hz switching chip IC1301 is bufferedby Q466 (see Fig. 4, Part 2) and fed to pin 37 of IC601. Pin37 is low for 50Hz operation, changing to high when a 60Hzsignal is detected. IC1301 determines the field scanfrequency on the basis of the timing of the field sync pulsesit receives from IC521. Depending on the voltage at pin 37of IC601, its line -frequency output at pin 41 will be at either15,625Hz or 15,750Hz.

External RC networks connected to IC601 control the linefrequency and phase: they are mounted away from IC601, onpanel E. There's no pulse feedback from the line outputstage. The line drive output at pin 41 of IC601 is taken todriver transistor Q501 on panel E.

There are two field hold presets, one for 50Hz and the otherfor 60Hz operation. They determine the voltage at pin 34 ofIC601. Switching transistors Q403/4 control this, in accor-dance with the state of the 50/60Hz signal from IC1301.Although IC601 has a low -power field amplifier built in it'snot used: instead the field drive output from pin 33 is used tocontrol the field timebase chip IC451 on panel E.

Line Driver and Output StagesThe line driver and output stages are conventional. As the

15 and 21in. models all use 90° tubes there is no need for

12V0

27k

V drive from IC601

C4621 R452470p7 22k

R456From protection circuit 22k

50 60Hz from 1C1301

25V

R482Fusible

R455Height

D451

H

Frombeam

sensingcircuit

PartLine drive

IC601to Q501

V H H Hout AFC osc

.31S313

39 40

centre

8V

R509

EW correction, which simplifies the circuitry. The lineoutput transformer T551 generates all the high -voltagesupplies for the tube. It also produces an 8V supply which isfed to a 5V regulator to power the teletext circuit.

Some early sets suffered from e.h.t. regulation problemsbecause of insufficient capacitance within the line outputtransformer. All text models now have a new transformerwith a built-in capacitor.

The Field Timebase

The field timebase is also conventional. It's designedaround a Sanyo LA7837 chip (IC451), see Fig. 3. The drivesignal from IC601 is fed to pin 2 of IC451, where the RCnetwork R452/C462 provides a pulse as the field drive signalfalls. This pulse is stretched by a single -shot multivibratorwithin the chip and is then passed to an internal ramp gener-ator which charges C453 to produce the field frequencysawtooth waveform.

Height stabilisation to counter the effect of heavy beamcurrent demand is provided by linking pin 6 via R450 andR471 to the beam sensing point (pin 3 of the line outputtransformer). Overall height control is provided by R455which adjusts the gain of the sawtooth generator.

For PAL operation the voltage at pin 5 of IC451 is heldlow by transistor Q466 (see Fig. 4, Part 2). When the50/60Hz switching chip IC1301 decides that an NTSC, 60Hzsignal is being received Q466 is switched off and the voltageat pin 5 rises. This is again connected, internally, to thesawtooth ramp generator which switches the gain of the

C454

Serviceswitch

V sync to IC1213 via Q1216

Fig. 3: Circuitry around the field timebase generator chip IC451.

Scan coils

04562200

ROSS1.5

Centring

103801


R574 55511 5.6HT

0108/123V

16VIC851

12V

Q851/ D857

12k

10

Beam

control

5562180k

0552

Mel

0856

15k

R5016k83W

0544LOPTpin 3

C54.210

470k

T2.2

Q558

8V

054110k D561

Q542

Fig. 4: The protection circuitry.

vertical amplifier. As a result the height remains the same forboth PAL and NTSC operation.

As usual with this type of circuit a charge pumpconnected to the main supply (25V) generates a highersupply (50V) for the field flyback. The pump componentshere are D451 and C454. The Sanyo chip has built-inthermal foldback, so that under extreme overheating condi-tions the output is limited. Pin 12 provides the output todrive the field scan coils. There's both a.c. and d.c. feedbackto pin 7. This adjusts the gain and linearity of the outputamplifier.

Protection CircuitryFig. 4 shows the protection circuitry. In the event of an

excessive load on the 12V line, the voltage will fall, zenerdiode D857 will conduct and Q851 will switch on. As aresult a voltage will be applied to pins 4 and 7 of the fieldtimebase chip. This will mute the scan. The same voltage isapplied to the base of Q542, which switches on. Q541 in turn

33k

100 3k3

R57510k

LOPT pin 9

Q541

5474

2

5456

Fig. 3

10381]

conducts. As Q541's collector is connected to the base ofQ542 the two transistors form a latch, both remaining on.Q542's collector is linked via zener diode D541 to the beamlimiting circuit (D552, R562 etc.). Thus when Q542 andQ541 latch on beam quenching is applied (via the sub -contrast and sub -brightness control networks).

R574 is connected in series with the supply to the lineoutput stage. Q558 senses the voltage developed across it. Inthe event of excessive current demand the voltage acrossR574 will rise sufficiently for Q558 to switch on, activatingthe latch via R575 and D561. Beam quenching then occurs.

ConclusionThis completes our coverage of the Z4 chassis. Although

still in production, it's being rapidly replaced by the new,cheaper Z5 chassis and some later versions of the Z3 chassis.While the Z4 chassis has been compared to the Alpha 3large -screen chassis it also has similarities with the Alpha 4.This will be covered in our next article on Panasonic chassis.

Help WantedWanted: Source of the UnidenUC1012B, Sharp IR3N06 and PC814chips for the BT Freeway cordlessphone (or scrap phones for spares). R.Harrison, 19 Southey Way, Larkfield,Aylesford, Kent ME20 6TS. 0732 849301.

Wanted: Original basic/assemblerROMs for the Epson HX20, with basicreference manual. Circuit diagram/tech-nical information also required. RichardMatthews, 117 Cliff Road, Felixstowe,Suffolk IPI 1 9SA.

Wanted: H.V. multiplier, part no.152-0495-00, for the Tektronix 7403Noscilloscope. C. Cress, 14 Copse Wood,Iver Heath, Iver, Bucks SLO OPT. 0753652 902.

Wanted: Service manual for theAllegro 125 electronic organ, made inItaly. F.C. Hughesdon, 19 Lower Road,Higher Denham, Uxbridge, Middx UB9SEA. 0895 883 774.

Wanted: Circuit diagram for theHeathkit IG37 f.m. stereo generator(copy would be o.k.). Also completelens assembly for the PanasonicWV3030E video camera (part nos.believed to be YW61 421B and YW614222) or alternatively a lens mechanism.Graham Seward, 2 Orchard Close,Severn Stoke, Worcester WR8 9JJ. 0905371 504.

Wanted: Service manual for theAmstrad Studio 100. Also a 350)3F,350V capacitor for the Matsui 2060CTV. D.C. Gordon, 54 Burn House,Aske Street, London Ni 6LE. 071 7391034.

Wanted: Second-hand teletext PCBfor Tatung Model 8821 CTV, serial no.2606234. Also circuit diagram or copy.M. Smith, 18 Malvem Close, Peterlee,Co. Durham SR8 2JN. 091 518 4140.

Wanted: Mecha control PCBassembly, part no. PU49564, for theFerguson 3V23 VCR. J. Austin, 5 Cran-well Road, Greasby, Wirral L49 3PP.051 677 9048.

Wanted: Circuit diagrams for theGoidStar Model GHV1240I VCR andITT Model CT3306 CTV. Could copyand return. G. Plaxton, 6 Pasture Court,Sherbum in Elmet, Leeds, N. Yorks.0977 681 745.

Wanted: Line linearity coil (L505)for the ITT CVC800 series chassis. T.J.Steel, 185 Charter Road, Chippenham,Wilts SN15 2RF. 0249 448 796.

Wanted: 1986-87 volume of Radioand Television Servicing. L.C. Dilke,106 Coldbath Road, Kings Heath, Birm-ingham B13 OAH. 0121 441 2449.

Wanted: Manual or circuit diagramfor a YRH8495 DK WD1 1 8736 102000Decca VCR. Problem is wow on sound -belts and pinch roller have been replacedand the capstan motor checked. J.M.Ridge, 9 Turner Street, Swindon, WiltsSN1 5EU. 01793 532 787.

Wanted: TDA2800 chip (IC925) forthe Grundig GSC100 (or any equiva-lent) chassis. D.H. Kidston, 102 FergusAvenue, Livingston, West LothianEH54 6BG. 0506 433 371.


VCR ClinicSony SLV777

For intermittent tape damage when a cassette is ejected, orfailure to play because the tape is not taken across to thecapstan, check whether the half loading arm is stiff in oper-ation. P.B.

Grundig VS500For inoperative tape start and end sensors check the driveto the tower LED. R285 (470 safety) can go open -circuit,as can CT285 (BC848C).

If the clock display flickers (the flicker gets worse if youput your hand near the display) change the fluorescentdisplay itself. P.B.

JVC HRD180

This machine wouldn't record new video signals. Soundwas recorded and the previous video was erased, but thenew video information was missing (if the full erase headwas disconnected temporarily, the previous video was left).A check on the pre-rec board showed that the /REC linedidn't go low. The cause was a dry -joint at the ribbon cablelink (CN2) between the mechacon board and the videoboard. P.B.

Philips VR231

When a known good tape was inserted and play wasselected the display consisted of a monochrome picturewith field jitter. If forward search was tried the fault clearedand the display remained o.k. when you went back to play.Scope checks around the LA7191 luminance/chroma chipIC7051 showed that the video signal was being corruptedby the CCD delay line chip IC7504. The video input at pin6 was all right but the output at pin 4 was 'chopped up'.The CCD clocking signal at pin 7 was similarly choppedup. It comes from IC7051, where the VXO crystal 1601wasn't producing a clean oscillation. A new crystal solvedthe problem. P.B.

Hinari VXL9This machine wouldn't tune. The BT line was permanentlyhigh, and altering the channel number (FS tuning) had noeffect. The clock and data lines at pins 53 and 52 respec-tively of the flat -pack, surface -mounted microcontrollerchip IC601 seemed to be o.k. but the supply 'load' at pin51 was low as it was dry -jointed. N.B.

Hinari VXL9This machine caused us a series of problems, one afteranother. I finally got down to the last two faults, whichseemed to be linked. The machine would intermittently gointo the external input mode of its own accord - replacingthe channel number with an E. Even more intermittently itwould for no apparent reason go into pause. This happenedonly in the play mode, never during record. As scopechecks showed that the spurious commands weren'tcoming from the local keys, checks were carried out around

Reports from Philip Blundell, AMIEIE,Nick Beer, Gerald Smith, David Belmont,Ronnie Boag, Graham Richardsand John Edwards

the IR amplifier. The supply was found to be slightly low at4.7V and had a 1V p -p ripple on it. This supply also powersthe microcontroller chip. So over to the power supplywhere both C505 (2,200p F) and C507 (220p F) were low invalue. Replacements restored a clean supply at the correctlevel and the mysterious happenings ceased. N.B.

Samsung S13240/3260

Cassette loading problems are quite common with thesemachines. There's a modified side plate for the carriage aswell as a different connect gear (the front loading drivecomes from the main mechanism loading motor). Theseparts are available from a number of sources - but beware,they are sometimes up to 400 per cent more expensive thanfrom Samsung, which charges just over a pound for theside plate! N.B.

Panasonic NVL20EG

This Continental machine wouldn't tune. It wouldn'tsearch, let alone find anything. The tuning system is farmore involved than that in the equivalent UK model, asthere's a multi -band facility as well as switchable a.f.c. andfine tuning. A d.c. check showed that the 5V supply to pin11 of the TV demodulator PCB was low at 1.08V. But itwas not being loaded excessively. It was present at source,and most of the way to this destination. The cause of thefault was a faulty through -the -board link between C7407and L7405. When this was linked across we could tunelimitlessly. N.B.

Samsung VI611/621There was intermittent hum on the E -E and playback soundand vision. We initially suspected defective capacitors inthe power supply, but the fact that the fault occurred whenthe machine was hot suggested otherwise. The cause of thetrouble was a superb dry -joint at the positive leg of C8 inthe power supply. N.B.

Grundig VS400

There was no tuning: the BT supply at pins 15 and 16 ofthe tuner was permanently high at 32V. The bus lines to thetuner appeared to be o.k., and disconnecting the linkbetween pins 15 and 16 then injecting a varying d.c.voltage proved that the tuner itself worked. So there was afault in the tuner's PLL/synthesis circuit. We sent the tunerto MCES who speedily put matters right. Incidentally thismachine uses the Panasonic D1 mechanism. N.B.

Panasonic NVG21/25One of these machines came in dead save for the fact thatthe cassette -in LED was on. Checks in the power supplyshowed that the unregulated 45V line was low at around25V. The 47p F, 50V reservoir capacitor C1018 was open -circuit.

As many of you will know, C1023 (1,000p F, 10V) in the


power supply commonly fails, causing various servo andchroma faults. These are sufficiently severe to lead to aservice call, but if the capacitor is left to deteriorate thedisplay and other features will be lost and regained rythmi-cally. N.B.

Panasonic NV788This machine's remote control system didn't work. The IRcommands were being inhibited because the machinethought that the timer was on. Timer inhibit is introducedby the MA165 diode D7554 on the timer PCB. A checkshowed that the diode was leaky. N.B.

Nokia VR3722This machine had no stored channels and wouldn't tuneany in. I found that the pulse -width modulation at pin 52 ofIC301 was of low amplitude. C6003 was short-circuit andhad damaged IC301. Everything was all right when thesetwo items had been replaced. G.S.

Sharp VC481HM"Tape stuck" it said on the note attached to this machine.On test rewind, fast forward and eject all failed intermit-tently. A new mode state switch cured the problem. G.S.

Matsui VX2000YThis machine appeared to be dead although the powersupply was working. The culprit turned out to be TC01, theorange trimmer capacitor that sits near the microcontrollerchip in part of the clock circuit. A replacement trimmerrestored the machine to life. D.B.

Akai VS75EKThe cause of very intermittent failure of the drum to rotatewas traced to dry -joints on the power supply PCB. D.B.

JVC HRD660Tape playback in the SP mode was good but the pause,search and LP modes were poor. I found that the LP headswere not being switched on because one end of R19, a chipcomponent on the head amplifier PCB, had never beensoldered. I). B.

Matsui VX755AThere were two faults with this machine: no display and noremote control operation. The former was caused by D1005in the 5V supply to the timer chip going open -circuit, thelatter by a faulty remote -control sensor. D.B.

JVC HRD750When this machine was switched on from cold it appearedto work, but after a few minutes the display would dim andthen go out. A check showed that the -30V supply droppedto -10V. The cause was soon traced to IC3 on the tunerboard. D.B.

Philips 31DV3This machine caused a lot of problems for the customer andthe local video hire shop: it would intermittently erase the

tape, sometimes for a fraction of a second. I monitored therecord 12V supply and found that it occasionally switchedon during playback. The service manual is a little unclear,but tracing the print back brought me to T141 which wasgoing leaky. A replacement cured the fault and, I guess,brought relief to all concerned. D.B.

Matsui VX6000AThis machine wouldn't accept a tape, the carriage movingonly very slowly. The loading motor had to be replaced asit had partially seized. D.B.

JVC HRS6800

This top-ot-the-range JVC S -VHS machine has a full rangeof features including PDC control. But it would record onlyone minute of the programme. The cause of the fault wasthe MV1820 PDC chip IC201. D.B.

JVC HRD880This machine would sometimes fail to accept a tape. Thecause was a broken tooth on the lift gear. We had toreplace the lift assembly as lift parts are not available sepa-rately. R.B.

Toshiba V309A problem we've had with this model is the drum runningtoo fast intermittently. Check for dry -joints at P509 on themain video PCB, also IC501 for bad connections. R.B.

Sanyo VHR7250Failure to accept a tape and the drum not turning at switchon has in our experience always been because the 13Vsupply is low. Check for dry -joints at D5105, D5106 andD5107. R.B.

Toshiba V110There was no fast forward or rewind operation. We foundthat the pin had broken off the white lever in the loadingblock. The complete loading block had to be replaced asthe part is not available separately. R.B.

Sanyo VHR235This machine wouldn't accept a tape and there was nodrum rotation at switch on. A check on the voltages at pins6 and 8 of CN541 showed that the voltage on the always13V line was low. The fault was cured by replacing theSTK5446 chip 10521. R.B.

Sharp VC481HThis machine caused us many headaches. When it firstappeared in the workshop it needed a new upper drumassembly. Not long afterwards it came back because of anintermittent low gain tuner. A replacement cured that. Thenext complaint, not long after we'd returned the machine,was that the E -E picture would vanish or go milky, withpoor sync. But we saw this fault only once. We decided tochange IC402 (HA11745NT). As it does nearly all thevideo processing, why not!

A week later it was back with the same complaint, but atleast the fault was there most of the time. Freezing and


heating got us nowhere, but scope checks showed that thevideo signal was going missing at pin 5 of IC402. I phonedSharp Technical who, after a lengthy examination of thecircuit, suggested that we replace Q403 (2SC2308) - wewere told that a BC546 would be suitable. Spot on andthanks Sharp Technical! The fault returned when the orig-inal transistor was put back. We were later told by thecustomer that the fault had been present, on and off, sincethe machine had been bought new! G.R.

JVC HRD520/HRD560/Ferguson FV42L etcYou sometimes get strange mechanism behaviour with thesemachines, for example the pressure roller not engagingproperly or too soon, or the half loading arm positioningitself wrongly. The cause is likely to be that the camassembly is misaligned or has a tooth missing at its outeredge - check carefully., as this can be overlooked!

If the machine tries to load without a cassette beinginserted, or there's a cassette already jammed in thehousing assembly, the optical switch at the right side ofthe housing is faulty. You can usually prove this byremoving the housing assembly and linking pins 2 and 3 ofconnector CN601 on the main PCB. This enables themachine to be run without the housing, which is handywhen servicing the mechanism. When refitting the housingmake sure that the small wheel which drives the housing -it's on the mechanism floor - is engaged, i.e. flick it closerto the mechanism wall. Also remember to remove theservice link at CN601.

To remove a jammed cassette disconnect the belt drivethen turn the housing cam clockwise until the cassette isejected.

The part number for the optical switch (phototransistor)assembly is PN268V1. The complete housing PCB part no.is PB40061. These part numbers are for the JVCHRD560EK.

Finally a word of warning. When checking for the causeof a tape transport fault don't connect an external powersupply to the transport motor. The drive chip is mountedwith the motor on the same PCB and will be destroyed. Ifyou have to test the mechanism with an external powersupply, isolate the drive chip from the motor connections.Better still, operate manually by hand! G.R.

Hitachi VT520This machine tried to load a cassette without one beinginserted and the wording "Code 1" appeared in the clockdisplay. We suspected the start and end sensors: fortunatelyboth pins of the rewind sensor were dry-joinyed. Aftersoldering this up the machine worked perfectly - and thewording "Code 1" disappeared as well. Phew! G.R.

Logik VR950/Samsung VI611For tuning drift with the 33V line being low and unstable,replace C2 (47pF, 63V) in the power supply and the 33Vregulator IC901 which is on the PCB behind the clock. G.R.

Toshiba DV90B

There was no clock and no tuning. The cause of the troublewas the d.c.-d.c. converter circuit reference Z802. G.R.

Amstrad TVR1This unit played tapes but wouldn't record. The record

30

button had no effect because the switch was leaky betweenpins. A replacement from a scrap panel cured the fault. Thecustomer had been using the timer override instant recordbutton for ages to delay repair, but had finally got fed upwith having to press the button every half hour to continuerecording! J.E.

Hitachi VTF770

This machine was lifeless apart from the clock display, andhad a fully laced up tape inside. When the power button waspressed the channel indicator came on but the machine shutdown again two seconds later. Fuse F852 (1.6A) in thesupply to the 14V bridge rectifier on the power supply PCBwas open -circuit. As it hadn't blown, a replacement went in.This restored normal operation. J.E.

Sharp VC9300

Rewind and fast forward were o.k. When either play orrecord was selected however there was motor noise but thetape remained unlaced, the machine entering the forwardmode at a slightly faster speed than normal playback. Fortu-nately the cause of the fault was nothing more than astretched lace -up belt. It's under the deck assembly, at thefront left-hand side. J.E.

Sharp VCA105HM

Playback was o.k. but there was just snow in the E -E mode.When the up/down channel search button was pressed therewas a normal pulse -width modulated squarewave at the baseof Q1451, but there was no voltage at its collector (or thetuner's VT pin) because the 33V regulator chip IC951 wasshort-circuit. J.E.

Logic VR960

Rewind and fast forward were o.k. When play was selectedhowever the machine laced up then, after a few seconds,unlaced and shut down. It wasn't the limiter post this timebut the loading belt, which was slipping. Normal operationwas restored when a new belt had been fitted. We noticedthat a slight crack was developing in the limiter post so thiswas replaced as well - we didn't want a "same symptom asbefore" situation. J.E.

Matsui VX880/Saisho VR1600/Hinari VXL4One of these machines would accept a tape and its displayshowed the functions selected, but it wouldn't carry out anyof the functions and refused to give the tape back. We foundthat circuit protector ICP201 in the 18V supply was open-

circuit. A replacement plus resoldering of Q02's connec-tions restored normal operation. J.E.

Sharp VC381

There was an intermittent loading fault. Sometimes thecassette would be lowered only half way and remain there.If the eject button was then pressed the cassette would bereturned. A meter connected across the carriage motorduring the loading process showed that the voltage at theearthed terminal would fluctuate then rise to 12V, thus stop-ping the motor. The cause of this was soiled contacts inrelay RY802 on the main panel. We carefully prized off thecover and gave it a squirt of switch cleaner. This cured theproblem. J.E.


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Inside the Ferguson ICC6ChassisPart 2

In this instalment we'll take a look at the signals side of thechassis.

Tuner and IF SectionThe tuner and Lt. sections of the receiver are contained in

screening boxes at the left-hand side of the chassis. They areof the same type that's used in the IKC2, ICC7 and ICC8chassis.

Frequency -synthesis tuning is used, the frequency beingselected by the PLL within the tuner unit under thecommand of pins 40 and 41 (data and clock respectively) ofthe microcontroller chip IRO1 via the I2C bus. A point tonote here is that the 5V supply for the PLL circuit is fed viatransistor TH02, which is biased on by the line output stagederived 13V supply. Thus in the standby mode TH02 is offand the PLL is inactive. The tuning voltage supply isderived from the h.t. (Usys) rail and is stabilised in the usualway by a 33V zener diode (DH04).

The i.f. section is straightforward as only mono sound isrequired. Thus the conventional intercarrier sound demodu-lation technique is used. The audio demodulator, a volume -controlled preamplifier and a TV/AV sound switch areincorporated in the i.f. box, the AV enable input being at pin9A. The logic here is OV = TV, 10V = AV. An input at pin12A mutes the audio when the set is not synchronised, i.e.there's no tuned -in off -air signal. We'll return to this later.There are direct audio input and output feeds between thei.f. box and the scart socket.

Composite video (CVBS) leaves the box at pin 6A andafter filtering to remove the sound signal goes to theTEA2014 TV/AV switching chip IX01. The video signal isof 2V peak amplitude, sitting on a 2V d.c. level.

The Audio SectionFig. 1 shows the audio circuit, which is based on a

TEA2006 power operational amplifier chip (IA01). When

PO

111 5k6

5V3k3

TA02

RA0915k

33n

RA08

2n2

CA08 CA07470

RA181k5

CA18T10

Mark Paul

an external speaker is connected to socket BA01 the drive tothe internal speaker is switched off.

The gain of the audio amplifier chip is set by RA18 andRA19, with CA18 to provide d.c. decoupling. RA01, CA01,RA02, CA03, RA16, CA16 and CA22 all affect the audiofrequency response. The audio output coupling capacitorCA22 also suppresses the lower frequencies. RA16 andCA16 provide an h.f. roll -off while the combination ofRA01. CA01, RA02 and CA03 reduces the response byabout 2-3dB at around 1kHz. Maximum gain is at 100Hzand 10kHz.

CA24 and CA26-29 provide output harmonic filteringand correction. RA21, CA21, CA17 and CA08 providedamping to suppress the tendency to oscillate inherent witha high -gain amplifier.

IA01 is muted in the standby mode by applying a zerod.c. bias to pin 1. This action is carried out by transistorTA02, whose base is biased from the 5V supply while itsemitter is connected to the PO (power on) line. In thestandby mode TA02's emitter is grounded via transistorTR96 (the PO source). It is thus conductive, pin 1 of IA01then being linked to chassis via RA16, RA12, RA 11, TA02and TR96. Note that the chip's 24V supply is still present inthis mode.

When the receiver is brought out of the standby mode thePO line rises to 5V and TA02 switches off. CAll thencharges slowly from the 24V line via RA08 and RA1 1.Meanwhile the tuner and i.f. section become active as theirline output stage derived 13V supply is now present, so anaudio signal appears at the emitter of TA01. The conductionof TA01 is controlled by CAll's charge and discharge time:it is included to prevent the switch on and off plops thatwould otherwise occur with such a high -gain amplifier.

The audio demodulator muting signal mentioned whenwe looked at the i.f. section is generated by the STV2110colour decoder, video processing and timebase synchronisa-tion chip IVOI. When the receiver is not synchronised by anoff -air signal this chip's saturation control input pin 27 is

IA01TEA20065 A22

470

RA211.13

RA1947k

CA21

T1

10 24V

LS sockets

3k3

Fig. 1: The audio circuit.

enCA24 emCA26.4n7 in i

IA28CA27 C CA29

11BA01

BA02

External

Internal

ID39s1


switched low internally. This pin is connected to transistorsTV82 and TV86, see Fig. 2. When pin 27 of IVO1 is lowTV82 will be off: TV86 will also be off as its emitter and

2

Saturationcontrol

27k

220 33k

22n

AVE

68k

22k

U2 9V

3k3

Ok

TV82

Fig. 2: The mute circuit.

L1

V66

2 Muteoutput

base will both be at 9V. The muting 'low' is thus alsopresent at the collector of TV86, which is connected to pin12A of the i.f. assembly and also pin 36 of IRO1.

The Video/Chroma CircuitThe STV2110 chip IV01 carries out most of the

video/chroma signal processing, including both PAL andSecam decoding and RGB switching. It also synchronisesthe timebases, producing a field sync pulse output to controlthe TDA1771 chip and the line drive output. Most of thechip's internal functions are conventional while the periph-eral circuitry is straightforward. In this section we'll justhighlight one or two features that differ from previousThomson chassis.

The input signals are internal/external composite video, Sluminance and chroma, and RGB from the scart socket andas an OSD from IRO1

IVO1's luminance input passes through VVO1, which

U2

S video switching RC77from IR01, pin 18 220 560p Composite video

RC71 CC71S To chroma E3PF

Fig. 3: The composite video/S chroma switching circuit.

provides the luminance delay and incorporates chroma,sound and i.f. rejectors. Because this introduces group delaydistortion, the signal passes through a compensation circuitbefore it arrives at pin 9 of the chip. This circuit consists oftransistor TV01, a bandpass filter whose response is centredaround 2.2MHz and resistors which reduce overshoots andimprove the signal's symmetry.

The chroma input to pin 18 of IVO1 is routed via aswitching circuit, see Fig. 3. Composite video is fed to thebase of transistor TC72 which is simply an emitter -follower.The usual chroma bandpass filtering is done between hereand the chip. S chroma from pin 15 of the scan socketarrives at the base of TC73 via RC71 and CC71. TransistorTC71 selects which input is to be passed to IVOI. To disablethe S video mode the microcontroller chip IRO1 connectsRC77 to chassis. TC71 is thus switched off and the Schroma path is open -circuit. When TC71 is switched on byIRO1 for S chroma input its emitter voltage rises to the point

where TC72 is cut off. Thus only S chroma can pass to'Vol.

The luminance and colour -difference signals arematrixed internally in IVO1 to produce RGB signals. IRO1feeds a control signal to pin 35 of IVO1 for selection ofinternal or external RGB signals. There are contrast andbrightness control inputs at pins 36 and 16 respectively,both subject to beam current limiting action.

IVO1 provides tube cut-off current measurement. It alsohas a warm-up detection circuit which inserts pulses into theRGB outputs. Pin 42 receives feedback from the c.r.t. basepanel to monitor the tube's cathode current. At switch onIVO1 produces a series of pulses which are applied to thetube's cathodes. The idea is to blank off the tube duringwarm up to its normal running conditions. The cathodecurrent is constantly monitored and at a predeterminedlevel, set by IVOI, three things happen: (1) The warm-uppulses cease. (2) The blanking is removed and the videosignals are applied to the cathodes. (3) IVO1 switches to itsrunning mode and initiates cut-off current measurement.This is carried out during the field blanking period, d.c.offsets being applied to the RGB signals to compensate forany black -level drift.

The Scart Interface

The scan interface circuitry is shown in Fig. 4. IX01selects composite video (CVBS) from either the i.f. strip orpin 20 of the scart socket and feeds the demodulated CVBSsignal to pin 19. It's controlled by the AVE signal fromIR01, which in turn initiates the switching as a result of auser command or the logic state at pin 8 (AVS - AV sense)of the scart socket.

IX02 operates as follows. RGB inputs from the scartsocket are clamped by DX22/3/4 to the voltage across CX08and then fed to pins 11, 4 and 1. The internal switches eitherpass the signals through to IVO1, via emitter -followersTX12/13/14, or cut them off. Transistor TX38 controls theswitching, the TVE (TV enable) signal being applied to itsbase via RX41.

The external fast blanking (FBe) signal at pin 16 of thescart socket is fed via emitter -followers TX32/34 andresistor RX43 to IVO1 (two transistors are used to compen-sate for the Vbe offset). The internal fast blanking signal(referred to as FBo), coming either with the text RGBsignals or the OSD signals from IR01, is coupled in viaDX37. DX31/2 limit the signal to ensure that IVO1'sblanking threshold isn't exceeded.

If external RGB signals are being used as the signalsource and an OSD signal is to be inserted, IX02 switchesoff the external RGB inputs as required. The switching iscontrolled by TX38, which receives the FBo signal at itsbase via RX38. DX38 is an anti -saturation diode.

If the viewer wishes to watch TV for a brief period whilethe receiver is operation with scart RGB inputs, IRO1 feedsa TVE (TV enable) signal to TX42 and TX38. As the TVEsignal is high, TX42 and TX38 switch on. The FBe signal atthe emitter of TX32 is then earthed while TX38 opens theswitches in IX02.

The RGB Output Stages

The RGB output stages, mounted on the tube base panel,are conventional wideband amplifiers with an active load (atransistor in parallel with the load resistor). The active -loadtechnique provides a high-level output voltage swing withlow distortion and a symmetrical overshoot. Its advantage isthat the maximum output voltage can reach the supply


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voltage figure without the output transistor saturating andproducing a smearing effect.

Fig. 5 shows the red output stage. White -level adjustmentis provided by PB31. There's an equivalent control in thegreen channel but the gain of the blue channel is fixed. The

0200V (UV)

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ratio of RB34 to PB31 + RB31 sets the stage gain. Emitter -follower TB11 supplies the emitter bias voltage to all threeoutput transistors, determining the symmetry of the black -level adjustment range.

TB33 and its equivalents in the other two output stagesact as current 'mirrors', being used for warm-up/cut-offbeam -current measurement. The RGB cut-off currents areadded and produce across PB37/RB38 and the equivalentresistor networks in the blue and green output stage circuitsa feedback voltage for pin 42 of IVOI. PB37 and its equiva-lent in the green channel (fixed resistors are used in the bluechannel) affects the cut-off current level so that 'grey'adjustment is possible. Emitter -follower TB12 acts as abuffer to reduce any potential interference reaching thecircuit, e.g. r.f. disturbances.

RB14, DB11, CB15 and DB12 provide switch -off spotsuppression. When the receiver is switched on CB15charges to 150V from the 200V line via RB14. The voltageat the tube's grid pin 5 is then about OV - actually 0.7Vbecause of the presence of DB12. At switch -off thedeclining supply line voltage and CB15's charge produce anegative -going voltage at the grids (DB12 cuts off when thevoltage at its anode falls to 0.7V). This negative grid voltagepreven the appearance of an 'after switch -off spot'.

Next MonthIn the concluding instalment next month we'll look at the

timebases and the watchdog circuit.

Trade News

The European Commission may shortly announce provi-sional anti -dumping duties on colour TV sets from five Asiancountries and Turkey.

CHS is distributing its new 602 -page 1994/5 catalogue.For further details contact CHS, Prospect House, BarmbyRoad, Pocklington, York YO4 2DP (telephone 0759 303068, fax 0759 303 620).

Visions Video Productions has released a 50 -minutevideo on the Panasonic G mechanism, which is also used inPhilips, Sony and Grundig VCRs. The video, which providescomprehensive guidance on servicing the mechanism, isavailable from Willow Vale Electronics (11 ArkwrightRoad, Reading, Berks RG2 OLU - 0734 876 444) at £24.99.

Philex PLC, Philex House, 110-124 The Broadway, WestHendon, London NW9 7BP (081 202 1717, fax 081 2020014) has published a supplement to its remote control cata-logue featuring new models, updates and additions, also acomplete cross-reference list.

The Institution of Electronics and Electrical IncorporatedEngineers (IEELE) has published an enlarged and updatedsecond edition of its book Electrical Safety at Work. Copiesare available from the IEEIE, Savoy Hill House, Savoy Hill,London WC2R OBS (071 836 3357, fax 071 497 9006) at£8.50 each (for orders from outside the UK add £4 for airmail postage ).

Pace has been holding a series of technical training semi-nars around the country for those in the trade. They start at7.00 p.m. and are free of charge. Those still due to be heldby the time we go to press will be at Isleworth, Mildenhall,Newtonabbey, Edinburgh, South Shields and Wakefield. Forfurther details apply to Tricia Payter, Pace Micro Tech-nology Ltd., Victoria Road, Saltaire, W. Yorkshire BD183LF (0274 532 000).


CD Player ServicingThis time we'll look at Philips' CDplayers, some of which come indisguise.

An Official ModificationMatsushita for example has used a

Philips mechanism in various Pana-sonic players. Skipping is a notuncommon problem with these andhas been reported in the house maga-zine Panacea. The ones in question,for example the Panasonic SLPJ24A,use the CDM4/19 (mini) mechanismand usually have the suffix A at theend of the model number. Problemswith reading the TOC, or simply skip-ping during play, may be encountered.

The cure involves locating connec-tors CN401 and CN34. Snip out thewire that joins pin 14 of CN401 andCN34. Then add a shorting linkbetween pin 14 of CN401 and pin 5 ofCN12, on the print side of the board.Some players have this modificationfrom original manufacture. It'sanother of those modifications thatneed plenty of publicity, as we meremortals would otherwise never beable to cure the problem.

The complaint with two Philips -equipped Panasonic players thatarrived recently was of skipping. Thefirst was an SLP202A. I carried outthe modification and cleaned the lens,but there was still some skipping. Thelaser power and focus bias were thenadjusted. This seemed to improve theperformance, but it was still not satis-factory. A new CDM4 mechanism wasrequired to obtain correct operation.

The second player was anSLPG100A. After carrying out themodification, cleaning the lens andadjusting the focus bias the resultswere perfect. Manufacturer's modsrule o.k.!

Jim's BargainsI've known Jim for about fifteen

years. The first time we met I boughtfrom him some Grundig tuners at avery reasonable price. I bump into Jimat least twice a year, and each time wepart I seem to have less money andmore bits and pieces than when wemet. I'm not sure whether I buy thingsoff him or he sells them to me, but thenet result is the same. Last year I

came away with some audio unitremote control handsets and a ToshibaXR9318 CD player, which uses thePhilips CDM4/19 rafoc mechanism.This one had a severe rattle. On inves-tigation the PCB was in about fourpieces and the transformer was on theloose. Oh well, what can you expectfor a fiver?!

This year Jim decided that he hadanother super bargain for me. When Ihad parted with an agreed sum ofmoney I found myself the owner ofanother two Grundig VCRs (oneV2000 type, one VHS) and a coupleof Philips CD players. Will I neverlearn? Somehow the two playersworked their way, out of turn, to thetop of my massive pile of jobs to belooked at - much of the pile is ex -Jim.

The Philips CD472The first was a CD472 that was

fairly straightforward to deal with.The drawer wouldn't open or closewhen asked to do so, so there was noway it would play. I dismantled andglued up the front of the drawer, thenreassembled it - with rather lessEvoStick than the last person to touchit. After that I reconnected the lead tothe tray motor and had a general lookaround inside to see whether I couldspot anything else before trying again.I went over the regulators to makesure that there were no dry -joints,then saw that the microcontroller chipwas inserted the wrong way round.When I managed to borrow a manualI discovered that Philips had markedthe board incorrectly. The chip was infact the right way round. Must make anote of it in case there's a next time.Pin 1 is towards the inside of thePCB, not towards the corner: as afurther check, the little blue resonatoris closest to pins 34-36.

Time to apply mains power. Thedrawer was now happy to open, butwhen asked to close it would do sobriefly then start to open again. Thesmall tact switch at the base of thedrawer was not making because thewhite plastic lever failed to maintainits correct position. A quick raid onthe Toshiba player from last year'sdeal with Jim and replacement of thewhite plastic bit brought success. Thedrawer now behaved as instructed and

Les Austin

when a disc was inserted the machineread the TOC and played as it should.All that was left to do was to adjustthe laser power and reset the focusbias, then wrap the job up. Hold on,there's a bonus: one of those remotecontrol units seems to be correct forthis player. All I need now is someonewith a bit of spare cash and adesperate need to own a CD472.

An AK791

l'he second Philips player was asix -disc cartridge multiplay machine,Model AK791. It was less straightfor-ward. Initial examination confirmedthat a few bits were missing. Therewas no on/off button, no actuating rodand no flap to cover the cartridge slot.When I fed in some discs they werechecked one at a time and were allrejected. At least the multiplaychanger section seemed to be workingcorrectly.

Time to try fault-finding on thelaser side of the machine. This was thepoint where I realised that the rafocunit had been fixed in place withSuperglue. The view in the manualshowed that a fixing piece wasmissing, but the manual failed toassign a part number to it. Afterremoving the rafoc unit and tidying upwhere the Superglue had been I used asuitably bodged speednut to make upsomething to replace the missingpiece.

Though the rafoc unit was nowaligned in the correct plane, it stillfailed to play. So the next move was togo into the test mode. From the power-

off condition you hold three buttons(next, fast forward and time/track) onsimultaneously then apply power. Thisis service position 0. Successivepresses of the play button take you tosubsequent test positions. Aftervarious LCD checks, position 5enables disc loading and position 6allows a radial arm check by using`next' and 'previous' to move the armto either limiting stop. The seventhplay press fires up the laser andenables focus search. With no discinserted the search is repeated anumber of times. With a disc presentand no other problems to prevent it,focus will be found. Play press eightstarts disc rotation, and after a period


of up to one minute audio will beheard.

All seemed to be good whenStravinsky was heard, but it didn't last.After a while the sound disappearedand the player went to stop. I

concluded that the rafoc was faulty,and that the problem may have beencaused by the flexible lead. The type ofrafoc unit used in this model is theCDM4/20 (mini), which is very similarto the type used by Panasonic and,more importantly, the ex -Jim Toshibaplayer. These machines in fact use theCDM4/19 (mini) version, whichappears to differ only in the type ofturntable for the disc. Anyway, usingan extension (Philips' part no. 4822322 40066 plus 4822 267 50676) and adisc hold-down clamp (4822 58260906) I came to the conclusion thatthe rafoc in the Toshiba machine waso.k. while the one in the AK791 wasfaulty. Decision time. Do I spentmoney on a new rafoc mechanism, ordo I try some transplant surgery?

In view of various comments aboutcowboys and bodgers in recent issues Iwas tempted to withold the next partfrom publication. But since I've neverbeen famed for discretion you shallknow the details, and I'll throw myselfon your mercy.

Philips used to supply things likeflexible cables as replacement parts.Nowadays only complete mechanismsare available. So the only source of thesmaller items is another scrap rafoc.The task of removing and exchangingthe flexible cable looked as if it wouldbe rather a pain however. So I thoughtI would try something else.

In my junk box I had the remains ofan older CDM2/10 mechanism, withits motor parts missing. The laser couldwell be o.k., but could it be transferredto the CDM4/20 body? A successfuloperation took place, and this time thepatient didn't die on the table. All waswell. Nearly. The TOC was usuallyread, but sometimes it wasn't. Playwas always perfect. It took a lot ofhead scratching before I found thecause of the problem. The completeCDM2/10 has a Hall -effect motor,whose casing includes a cylindricalplastic magnet. When the radial arm issent to the innermost disc position inreadiness to read the TOC, the magnetsin the lens part are attracted by themotor casing magnet and the arm isheld there until the TOC has been read.The servo then powers the arm out tothe start of the audio track and stays incontrol thereafter.

The CDM4 mini has a morecommon d.c. motor however, with nosurrounding field. So there's no reason

for the radial arm to bother to wait atthe inner stop to ensure that the TOC isalways read. And so to the bodge. Avacant hole at the opposite side of theradial arm is a convenient home for aferrite bead measuring about 3 x 5mmand a bit of adhesive to keep it there. Amagnet could be fitted at the rear of therafoc unit's housing, if I could find asuitably small one. A few days previ-ously I'd thrown a dead Sony KSS150laser unit in the bin. It was rescued andone of the small, flat magnet squareson which the focus and tracking coilsexpend their energy was brutallyremoved and then carefully glued insuch a position that it would exertenough 'pull' on the ferrite bead toensure that the radial arm was held atits innermost position for the durationof the TOC reading time. All that I

now have to do is to order the powerbutton etc. and then find a willingcustomer with a few pounds to spare.

Some Technical DetailsIf any of you think that this sort of

transplant might be useful occasionally,here are a few notes I have made whileplaying about with the CDM2(CDM2/10 etc.), CDM4 (CDM4/11etc.) and the CDM4 mini (CDM4/19etc.).

(1) Most CDM2 decks have Hall -effectmotors. Some CDM4 units have Hallmotors, others have normal d.c.motors. All CDM4 mini decks havenormal d.c. motors.

(2) The disc turntables may bemagnetic or have mechanical hold-down. There are different types ofmechanical turntable hold-down.

(3) The FPC cable can be long or short.

(4) Some rafocs have a plastic'bumper' on the swivel (radial arm)moulding. There's a correspondinggroove in the main moulding. Incom-patibility will occur where this grooveis absent.

(5) The radial arm must be hard againstthe inner stop when the TOC is beingread. A method of ensuring this maybe required.

Finally, how do these Philips mecha-nisms work? The more common three -beam system is like a foreign languageto most of us: the Philips single -beamarrangement must surely therefore bedouble Dutch! If you want to find outmore, you may be interested in a Philipstraining aid. A large, zipped plastic

wallet is available: it contains a bookleton error correction techniques, anotherthat explains the Philips chip sets, withan update added, information on theI2C system bus, and last but certainlynot least an audio cassette that reviewsall the bits we need to know. At around£1 it's a bargain. Part no. 4822 73710157 should identify it to the Philipscomputer.

The Soap. Episode 4During the next few months spent

on the Isle of Man I learnt a bit aboutsimple computer repair and fixed a fewcar radios and some other audio equip-ment. When a couple of CD playersarrived I hid in fear, allowing Alan toprove that he did indeed understandcompact disc technology.

I returned to the UK about once amonth to check on my Valuable Asset,tidy up, cut the grass and so on. Duringone such visit I found, just as I wasabout to set off to catch the boat, thatrain had leaked into a wardrobe in abedroom. Assuming that it was simplya loose tile, I rang a pal I've knownsince we were at Tech together overthirty years ago. He has also escapedfrom management in British industry,and now earns his daily bread as abricklayer.

Next month I found that althoughGraham had removed and replaced alarge section of tiles the rain was stillgetting through. After some investiga-tion we discovered that it was comingthrough a flat roof some distance away,then running along under the tilesbefore it appeared in the wardrobe.Another flat roof also looked bad. I hadthem both relaid, but realised that myVA was in the process of becoming aderelict property. The only sensibletactic seemed to be to move back andlive in it again, thereby keeping thingswarm, dry and under control.

In order to earn some money tokeep the expensively suited bankmanager at bay, I obtained a job as acommissioning combustion technolo-gist. A little over a year later I foundmyself redundant. Thoughts of theESBM stealing my VA were a worry- it happens to many redundantpeople. Thus an advertisement for anengineer to repair CD players caughtmy attention and demanded a reply.Admitting my total lack of acquain-tance with CD technology apparentlyfailed to act as a disqualification andthat, dear reader, is the answer to thequestion posed by John in theprologue some months ago. Anepilogue will follow in due course.But you'll have to wait for that.


Satellite FaultsAmstrad SRD400

If there's an OSG readout saying that "your card is invalid"when the card is known to be o.k., check the 5V "VCC Card"test point on the VideoCrypt decoder board beforecondemning the decoder. The test point is just in front of the10 -pin connector CNM I : the supply should switch on whenthe card is inserted and switch off when the card is removed.

If the supply is missing check whether the 5.6V zenerdiode DP16 on the main board, close to regulator TP05, isshort-circuit. TP05 is visible to the left of the decoder board.If this is not the cause of the problem, check the rest of the"VCC Card" supply components - TP05 (2SD1667), TP6(2SA933), TP07 (2SC1740), DP13 and 14 (both 1SS133) andDP15 (5.6V zener diode). In most of the cases I've comeacross however DP16 has been the culprit. J.C.P.

Pace PRD800

We were told that this receiver was dead, and so it proved tobe on our field call. Instead of the usual major power supplyblow up however replacement of the BUTI1A chopper tran-sistor and the mains fuse got the box up and running withoutany problems. A note on the job card said that the powersupply had had the usual rebuild/modifications a couple ofmonths previously, so we left the receiver running on testwhile a couple of other calls were made.

On our return we found that everything was o.k. apart fromthe fact that the loop -through u.h.f. signal produced a noisypicture. A fault in the satellite receiver's r.f. amplifier wasconfirmed when we connected the u.h.f. aerial directly to theTV set - the picture was excellent. This led to suspicions thatthe fault that had given rise to our initial call had been causedby a kiss from one of the recent, frequent thunderstorms here.The PDR800's r.f. amplifier/modulator is built as a compo-nent part of the main PCB, all the parts involved beingsurface -mounted devices. So the receiver was uplifted forrepair in the workshop.

When we had it on the bench we first confirmed that therewas indeed loss of gain in the r.f. amplifier, then turned ourattention to the two amplifier transistors Q10 and Q11.Surprisingly, they were o.k. Moving back towards the u.h.f.aerial input we discovered that the two 120 SM resistorsR564/566 were open -circuit while D22 (BA519) was short-circuit. Replacing these items restored normal u.h.f. loop-

through signals, and after a suitable soak test the receiver wasreturned to the customer. J.C.P.

Ferguson SRV1

My stomach sank when this unit appeared on the bench:maybe it was because we'd sold it only a week before, as our`reconditioned bargain of the week', after fitting a modifiedSharp tuner that had been supplied very promptly by Pace.Here it was back on the bench, producing just an unsynchro-nised mess on the monitor's screen. Suspicions that the newtuner had failed were discounted when I found that thecartoons and the unscrambled German channels camethrough loud and clear. So we had a decoder fault - and avery irate pensioner in the shop!

I reasoned - and hoped - that the cause of the unsynchro-nised picture was failure of the decoder clock. The manual

Reports from John C. Priestand Robert Philpot

includes the decoder circuit, which I was just about able todecipher beneath the anti -copying lines. I could see that aclock signal passes through the quad two -input nand gateIC13: scope checks showed that there was a good pulse input,but only a mess came out. IC13's type number is not shownon the circuit diagram, and I didn't have a manufacturer'sreplacement in stock. Only two of the four gates are usedhowever, the others being grounded. A little rewiring sent theclock pulses through the unused gates, restoring a lockedpicture on Sky Movies. I've ordered a new chip, part no.80160700, in case my bodge doesn't last. R.P.

Marconi BSB LNB

Being on the south coast, we seem to have more than ourfair share of French expatriates who watch terrestrialtransmissions from 'home'. When the Telecom satellitesstarted to provide signals, we were able to offer themextra channels at a very reasonable price by using modi-fied ex-BSB equipment. This equipment proved to be veryreliable - until the summer heatwave that gave rise tomasses of "intermittent no signals" calls. In every case thecause was poor joints at the 78M05 regulator in the LNB.Repair involves drilling out the case, resoldering and re-

riveting. R.P.

Salora SRV1150

It took almost three minutes to tune across the band - if youcould keep pressing the button without letting go for thislong! The cause of the trouble was the 4016 quad analogueswitch chip ICA8. It alters the a.f.c. to change from low- tohigh-speed scanning, but was stuck at slow.

A no sound fault in one of these receivers was caused byanother 4016 chip: ICA3 had failed internally. R.P.

Pace SS9000

There was a very nasty type of interference: five or six diag-onal lines travelled slowly up the screen. Its cause was notunexpected: the 24V reservoir capacitor C29 (100µF, 35V)had dried up. It's mounted too close to the mains transformerfor its own good. R.P.

Decca/Tatung 1000 SeriesThis Astra receiver was brought to the market at great speedand was originally sold at quite a high price. So customers arereluctant to part with them - they seem to be used as sparereceivers or in the children's room. Very common faults areoverheating, caused by the underrated mains transformer, anda dead set because the 12V regulator has failed. You can't doanything about the transformer apart from keeping newspa-pers off the top of the receiver. The 12V regulator howevercan be replaced with a 2A version that runs much cooler.

The no signals symptom is often caused by the TEA1014switching chip IC203, which fails for its own reasons. If youcan't get a replacement, a 4053 works fine. This calls forsome rewiring, but the circuit is simple and the diagram iseasy to follow. R.P.


Test Case 383The satellite business seems to be perking up, in this neck ofthe woods anyway. Whether there is a general trend orwhether it's due to the special efforts being made here by ourshop staff is hard to know for sure. The fact is however thatwe've had to rig up a mobile satellite service outfit. It'sgenerally operated by Real Technician, in his new guise ofAssistant Satellite Serviceman. But as we can't call him ASSit'll have to be RT as ever.

Much of RT's workload consists of dish and receiverinstallations, jobs done in this area up to now by the likes ofStick -Em -Up Ltd. and Wild West Satellite Co., whose doingswere recounted in the August 1990 Test Case. Their chargesare high, their standards low, and we found that we were veryoften paying them to rework their own bounces. Hence theemergence of Test -Case SuperSat.

Climbing ladders and banging in cable clips is only part ofRT's workload: repairs and servicing also figure in his dailyround. The first two such jobs will be recounted here, to seehow many Television readers might like to apply for RT's jobwhen he leaves us, as he has sworn to do after his first weekon the road.

As with last month's saga, the first story relates to astrange problem with brand-new equipment. Mr. Wickens, agreat twiddler and button pusher, had suffered a burglary. HisVCR and satellite receiver had been stolen but, for practicaland physical reasons, the villains had left his 29in. TV set andthe dish on the wall outside. Thanks to the insurancecompany a new VCR and sat -box, both of JVC manufacture,now stood gleaming in his lounge. They had been broughthome and installed by Mr. Wickens himself.

RT and SuperSat Service got involved because the JVCsatellite receiver wouldn't tune. It was supposed to be preset

to the Astra channels, but they didn't seem to appear whenthe relevant handset buttons were operated. Undaunted bythis, Mr. W had got to twiddling and tuning, searching andseeking. lie had found most of the transponders andprogrammes but, he told RT, the frequency readout was allwrong. He wanted a replacement: the box and packing wereready to be taken away, and great was his ire when our maninsisted on checking the gear out on the spot. RT soon hadthis one sorted out -a new receiver would have done just thesame! What was the trouble, and how was it solved?

On then to the second call, to Mrs. Trotter. The pictureproduced by her Pace SS9200 integrated receiver -decoder(IRD) was reported to be flickering. Mrs. Trotter had discon-nected the receiver from the mains, robbing herself of terres-trial reception (via the loop -through) until her husband hadplugged the aerial into the VCR directly. When RT had sortedthis out he was dismayed to find that the picture was steadyand free of flicker. One cup of tea later there was a slightflickering effect with the space -borne pictures. RT took offthe top cover and established that a warm blast of air from ahairdryer resulted in more marked flickering. The effect wassimilar to that produced by very old cine films or an ancientTV receiver with a field -hold problem - the field timebaserunning at half its correct speed. A substitute receiverproduced good pictures, so this looked like a workshop job.

With the IRD on the bench there was again no apparentfault at switch on from cold. But as the IRD warmed up, thepicture started to flicker. The flickering became worse when ahairdryer was used to increase the board temperature: badenough in fact to trip the field hold of the TV set being usedas a monitor. When the video output signal was viewed atline rate some sort of hum seemed to be superimposed on it.It was more visible with the scope's timebase switched to thefield scan rate. There was no hum on the outputs from thepower supply however. So where did it come from?

For the answers to these conundrums, turn to page 48.

TELEVISION INDEX & DIRECTORY PLUS REPRINTS SERVICE

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MainsIsolation andWorkshopSafety

Eugene Trundle

All practising technicians know that for safety an isolatingtransformer is required at the service and repair bench sothat the equipment being worked on is isolated from the livemains potential. The presence of the isolating transformereliminates the risk of a mains -to -earth shock, but severalquestions remain. What about test equipment and tools likesoldering irons? How should the installation be fused andprotected? Is it dangerous to work near earthed metal, suchas a radiator? This article aims to clarify the situation andsuggest safe working practices and wiring set-ups, based onthe Electricity at Work Act, the Factories Act, RETRArecommendations - and common sense! Nick Beer coveredthe safety testing of appliances and installations in an excel-lent article entitled the Electricity at Work Act in theSeptember 1992 issue of Television. In this follow-up I'llconcentrate mainly on the wiring, isolation and arrangementof the repair bench and its immediate surroundings.

Need for Mains IsolationAlthough switch -mode power supplies that provide isola-

tion on the secondary side of the chopper transformer havelargely overtaken the earlier 'live' TV chassis and therenever was a VCR with a live chassis, the need for the mainsisolation of equipment being repaired remains. The primaryside of the chopper or mains transformer is still very muchalive in any equipment, while possible leakage in isolatingcomponents and 'man-made' faults can result in the rest ofthe circuitry being live, with a resultant risk of electricalshock. It must always be remembered that there are stillthousands of live -chassis sets around, and that not all setswith a switch -mode power supply have an isolated chassis.

The Mains Isolating TransformerBecause the secondary winding of a mains isolating

transformer (ITX) is 'floating', nothing connected to it canpass significant current to earth. Thus the mains live -to -earth shock risk is minimised. There remains the potentialhazard of the bench technician completing an internal circuitin the equipment on which he is working, in particularconnecting himself across a charged reservoir capacitor orbetween an h.t. or e.h.t. point and chassis, but this hazardcannot be eliminated - we have to rely on training, knowl-edge and experience to minimise it. The old "keep one handin your pocket" rule avoids the risk of a through -the -heartshock, potentially the most dangerous.

Each bench or service station must have its own ITX, andthe benches or technicians should be beyond arm's reach ofeach other, with insulating (e.g. wood or plastic) barriers

40

between each service station when they are arranged alongthe same bench. An ITX should ideally be rated at 500VA(500W if you prefer the old way of referring to it) or moreto provide a good 'stiff' supply with a low sourceimpedance. This caters amply for inrush and surge currents,and avoids spurious effects with certain types of powersupply. The low source impedance of a 500VA transformeris also useful when dealing with today's high -power audioequipment, which makes surprisingly high demands on thea.c. mains power supply.

All good ITXs incorporate a metal screen between theprimary and secondary windings: it should be earthed at thepoint where the ITX is connected to the mains. The rating ofthe fuse on the secondary side of the ITX is a vexing ques-tion. It should be 2A to match the transformer's 500VArating, but this can lead to nuisance blowing. I compromiseby using a 3.15A, 250V 20mm time-lag fuse in a fully -insu-lated (but readily accessible!) holder.

The output from the ITX should be wired to two fully -

insulated (plastic) switched 13A sockets (see Fig. 1), onewith its earth pin (E) connected to earth and the other withthis pin left disconnected. For equipment that's temporarilywithout its mains plug a third (unearthed) connector of the`safeblock' type is usually necessary. It should be labelledISOLATED TEST SUPPLY 500VA MAXIMUM. Onlyone such connector should be in use at any time, to feed asingle item of equipment under test or repair. Use theearthed 13A socket only for gear that has a three -core mains

Mainsinput Fl

EO

RCD

ill

F20

0

1

Aerial lead, etc.

E

13A sockets

E

N

Equipmenton test

Probes, etc.

..1111-Th

Earth -free zone

Test gear

LIso stingsocket

103911

Fig. 1: Wiring arrangements for earth -free zoneoperation, using a single mains isolating transformer(ITX) and earthed test gear. Contact between thetechnician and earth (radiators, pipes, the floor etc.) mustbe made impossible. F1 represents a fuse or an MCB.

cable, and even then only when the earth line is essential forstable operation - sensitive audio amplifiers and some tele-phone equipment are possible examples. We'll return to this`earth -free environment' shortly.

The primary winding of the ITX should be connected tothe workshop's 240V ring mains supply via its own RCD(residual current device) rated to trip at 30mA/30msec orless and a fuse or MCB (miniature circuit breaker) rated, foruse with a 500VA ITX, at 5A. An alternative name in usefor RCDs is ELCB (earth -leakage circuit breaker).

At one or more easily accessible places known toeveryone who works on the premises there should be anemergency tripswitch (generally associated with the mainsRCD, MCB or fuse bank) that cuts off the power to thebench(es) but not the overhead lighting.

Earth -free Zone

To be safe, the casing (which usually means the OV test


line) of all metal -cased test gear must be earthed so thatinternal insulation breakdown cannot 'light up' the techni-cian. This introduces a new risk: the OV (chassis) line of theequipment on test (EOT) will become earthed whenever it'sconnected to such test gear, presenting a shock risk betweenany live point within the EOT and any earthed conductor inthe vicinity. This includes radiators, concrete floors, conduitpipes, water pipes and similar things. Most signal distribu-

Mo Insinput

ITX2

Fig. 2: Use of two isolating transformers means that allconductors at the bench float: thus earthed objectsnearby present no shock danger since there is no d.c.return path. It's a good idea to connect a high -value (say2.2M12, 2W) resistor from the chassis line to true earth toprevent the build up of a static charge. It's shown withbroken lines here.

tion systems have an earthed screen - they should have infact, so that they cannot acquire a high potential ordistribute interference or radiation around the workshop.

It's thus necessary to ensure that there are no earthedobjects within reach of the bench or beyond - to a range oftwo metres all round. This means the need for non-conduc-tive or covered flooring, walls and bench structures as wellas the more obvious things. It also means that the benchaerial socket(s) must be isolating types to BS415/EN60065.

This is what might be called Plan A: the EOT isolated,test equipment earthed and everything within an earth -freezone. Fig. 1 sums this up. With this mode of working youhave to be careful not to introduce an earth into the workingarea. Thus it's dangerous to run a wire from Joe's patterngenerator to Pete's bench, or to rig up an electric fire ormetal -cased fan when the weather is cold or hot.

It's sometimes not possible or practical to set up anearth -free zone. There may be radiators nearby to supplymuch -needed heat or a concrete floor that's not easily insu-lated. In such situations Plan B can be implemented (seeFig. 2). Its principle is that because you may be earthedwhilst working, all the equipment (EOT and test gear)floats, i.e. is mains isolated. The ITX that supplies the EOTcannot also feed the test gear, so a second ITX, which canbe smaller and cheaper, must be used to feed the test gear,suitably fused. It can share the same RCD. This eliminatesthe risk that the technician may complete a circuit from alive point within the EOT to earthed surfaces on or near theworkbench and is outlined in Fig. 2. Even with thisarrangement isolated aerial sockets should be retained andthe bench should have a non-conductive working surface.

Tools and LightsSo far we've considered test gear in general - pattern and

signal generators, oscilloscopes, vectorscopes, mains -powered frequency and multimeters etc. Some of it, espe-cially modern gear, is double insulated, eliminating anyneed to worry about the potential of its case and/or the OV

test line. All test equipment and other electrical appliances(including ITXs) must, in accordance with the Electricity atWork Act, be regularly safety tested anyway.

Sodering irons and bench lights should ideally be runfrom their own low -voltage, isolated supplies via specialsockets that you can't plug anything else into by mistake.While the lighting supply for a group of benches or thewhole workshop can be a common one, typically at 12V or24V, each soldering iron should be fed from its own on -the -spot isolating transformer. This is common with thesoldering stations now available. Mains -powered solderingirons are not recommended for bench servicing work onconsumer equipment.

Static -free workstations for use with CMOS and similarsemiconductor devices have been described in these pagesseveral times, so I won't reiterate the details here: From apersonal safety point of view the main thing to remember isthat to remove static charge you don't have to be earthed`hard': the earth path can contain a resistor of sufficientlyhigh value to limit even a live -to -earth current to a safe (forpeople) value. Commercially available wristbands forinstance contain a 1MS2 resistor.

Returning for a moment to lighting, if the bench light is a240V type it should, ideally, be double -insulated. If not, andif it has any exposed metal in its construction, it must eitherbe earthed as part of Plan B or, if it's going to be included ina Plan A earth -free zone, fed from a separate ITX. It's prob-ably better to replace the light with a more suitable type!

Soak TestingSpecial isolating precautions are not required for soak -

testing benches provided the EOT is not worked on there, itscovers remain on and it has been safety -tested in accordancewith the Electricity at Work Act. If work is required, the setmust be brought back to the proper service bench before it'sundertaken.

Safe WorkingAlthough the precautions described so far will minimise

the risk of shock to technicians, the ever-present one ofgetting a belt from within the equipment on which you'reworking cannot be eliminated. For this reason it's recom-mended that no one ever works on mains -powered or high -voltage equipment unless they are within the sight andhearing of someone else who can trip the supply, give assis-tance and raise the alarm in case of an accident. This appliesin the field as well, for example in a customer's home, incases where the key is left for the outside engineer or thecustomer goes out while the job is in progress.

On the subject of field servicing, the best approach is tohave with you and use a portable isolation transformer and alarge rubber mat - and use battery -powered test equipment.The difficulty of maintaining servicing safety in a widerange of unpredictable conditions is one of the main reasonsfor the growing trend to removing equipment to the work-shop for all but the simplest repair and adjustment jobs.

Finally a few words on general workshop safety. Alwayskeep handy a fire extinguisher that's suitable for electricalfires, and have electric shock and resuscitation charts clearlydisplayed near the benches. When handling or transporting apicture tube, use a conductive strap to link its Rimband,e.h.t. cavity socket and outer conductive coating together,and lift it by its howl, screen down. Before tackling aswitch -mode power supply circuit remember to disconnectthe equipment from the mains supply and discharge themain reservoir capacitor, using a resistor of say lkS2 value.


TV FaultFindingHitachi CPT2071, CPT2226 etc

Just for a change field collapse with one of these sets wasn'tcaused by the field output module or an electrolytic capac-itor. D601, the field blanking diode connected to pin 9 ofIC701, was short-circuit. Yet another 1N4148 was pressedinto service and was happy to oblige. C.A.

Philips CTX-E Chassis

For persistent line tearing/pulling when showing videos,even on the VCR compatible channel, check the setting ofthe a.g.c. preset R3144. It might save you a wastedmorning! C.A.

Sony KV211XMTU (AE1 Chassis)

The whole picture was covered by fine, shimmering hori-zontal black lines. A scope check on the field output wave-form showed that there was a lot of h.f. oscillation present.The 3300 scan coil damping resistor R544 was found to beopen -circuit. C.A.

Philips VSS2440 MonitorThis 12in. monochrome unit is part of the Philips BasicObservation System which we purchased recently toimprove shop security. It's easy to install and the tiny CCDcamera with its wide-angle lens provides Tom and Tony inthe back workroom with a perfect bird's eye view of theshop, including the back of my head! Unfortunately twodays after we installed it the picture vanished, althoughsound was still present.

Faced with the choice between a lengthy and expensivereturn under guarantee or a DIY attempt, I opted for thelatter and removed the back. The line output transistor washot and the line output transformer was also quite warm.Deep in my memory, something stirred. I disconnected thee.h.t. lead from the tube, switched on and with my insulatedscrewdriver drew from the connector a neat little a.c. arc.Yes the e.h.t. stick, inconveniently burried in the LOPT, wasshort-circuit - just like the Thorn 1690 chassis of earlierdays. Finding an old stock BY176 rectifier (15kV, 2.5mA)in the drawer, I'm afraid I cut the e.h.t. lead near the trans-former, soldered and sleeved the diode and restored thepicture - so pretend you never read this. . . C.A.

Alba CTV55This set was a nightmare. After defying previous repairattempts elsewhere it landed on my bench with thecomplaint "no picture". On this model the momentarycontacts to bring the set on manually from standby are notin the on/off switch but in a separate button switch justabove it. Pressing the mains on/off switch immediatelypowered the set however, but with no sound or picture!After removing the fusewire that had been soldered acrossthe standby relay contacts and pressing the standby button I

Reports from Chris Avis, K. Wright,Adrian Farnborough, John G. Bennett,Michael Dranfield, David J. Whilding,Keith Evans, John Edwards andChris Watton

found that channels could be tuned in with sound and an on-screen status display. But the only 'picture' that could beobtained, when the first anode control was turned up, was ablotchy coloured one - there was no luminance. (The relayand remote control functions were o.k., so the fusewireremains a mystery.) A common cause of a dark or absentpicture with this chassis is an increase in the value of one ofthe resistors R429 (180kO) or R423 (1001d2) in the beamlimiter circuit, usually the latter, but both were spot on.

The luminance signal passes from the video processingchip IC301 to the matrixing circuit on the tube base via theemitter -follower transistor Q303, which is used for blankingpurposes. A scope check showed that the luminance signalwas not getting through this stage. Various diodes areconnected to the base of Q303. When D309 was discon-nected normal luminance was restored. The other (anode)end of D309 is connected to the collector of Q304, wherethe voltage was high because the transistor's base voltagewas low. The value of the base bias resistor R366 had risenfrom 22k0 to 801(12. C.A.

Samsung CI338X (P50 Chassis)Very erratic and sudden tuning drift could be affected bymoving or tapping the tuner. But the cause of the fault waselsewhere. The tuning voltage feed from the remote controlboard comes via a screened lead to connector SN01, one pinof which had a hairline crack around it. Resoldering putmatters right. C.A.

Bush 2020/2114

There was no channel display and no sound or vision.Brightness could be obtained by slightly advancing thesetting of the first anode control. We first suspected theSAA1293 remote control decoder chip, but a replacementmade no difference. Subsequently we found that replacingtransistor TR2 produced normal operation, though the setfailed again after some hours. The final cure was to replaceboth TR 1 and TR2. They are both type BC237, and controlthe reset action. When tested the original transistors seemedto be perfectly all right. K.W.

Toshiba 2939DB

This receiver, with Dolby Pro Logic sound, is a ratherimposing set to tackle. The first one to come into the work-shop was stuck in standby and refused any command fromthe remote -control handset. We found that the power supplywas producing the nominal 45V output, which it does instandby to eliminate breakdown in the line output stage.Next we checked at the microcontroller chip ICA01 to seewhether its 5V supply and 4MHz oscillator were o.k. Bothwere correct. But the on signal from the chip to the powersupply was permanently high: it should go low to switch theset on from standby.


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Scope checks showed that there was nothing on the serialdata and clock lines. Was the data being shorted out? Resis-tance checks seemed to indicate that all was well. Further,the data and clock lines are connected to the central bus viathe emitter -follower transistors QA12 and QA02, providinga degree of isolation. So with some apprehension weordered a replacement micro chip from Toshiba. After all acustomer who pays £900 for his TV set expects it to berepaired promptly and efficiently, particularly when it'sonly a few weeks old!

Happily the new chip did provide the answer. And, inter-estingly, it's a Sony device. A.F.

Mitsubishi CT2534TX (Euro 4 Chassis)Failure of the 0.82Q protection resistor in the supply to thefield timebase is a common fault with this and similarmodels. This set produced a raster however, but there wasno sound or vision. When the tuning mode was selected thegreen display was at its limit at the right-hand side of thescreen. Tuning adjustment enabled stations to be selected,but they couldn't be memorised.

We suspected the supplies to the EAROM chip IC702.The standby power supply provides it with 5V and -30V.The 5V feed was present but not the -30V feed. Not muchto check - just a rectifier circuit. The culprit was the standbychopper transformer T951 however. It was open -circuitbetween pins 4 and 2. A.F.

Hitachi C15 -P108 (Salora L Chassis)

Since technical advice is no longer available from Hitachiunless you have an account we engineers need all the helpwe can get in solving some of the more obscure faults.

A C15 -P108 portable came in recently with perfect textbut the ordinary pictures blanked out. The TDA3301Bcolour decoder chip was suspected and checks showed thatthe voltage at pin 31, the black -level clamp, was at OVinstead of 3.5V. We replaced the clamp reservoir capacitorCF07 to no avail, then the chip itself with the sameoutcome. Further checks showed that the voltage at pin 34didn't vary when the 2200 preset PFOI was adjusted. Thiscontrol affects the luminance contrast level and is part of theRGB drive setting up procedure. It was open -circuit, a

replacement restoring the picture.A fault you get from time to time with these sets is slow

start up. The cure is to replace CN10 (1,000pF, 35V) in thepower supply. J.G.B.

Matsui 1450At switch on the e.h.t. surged up violently and the X-rayprotector within the line generator chip shut the set down.By disconnecting the feed to the line output stage andrunning the power supply with a 100W bulb as the load wewere able to check that the h.t. was close to 160V instead of107V. The cause of the fault was traced to the 47pF, 25Vcapacitor that couples the base drive to the chopper tran-sistor. It had dried up.

Q605 (2SA1013), the h.t. supply switch on the secondaryside of the chopper circuit, had also been damaged. The setwouldn't go into standby. M.Dr.

Sony KVM2120U (3E1 Chassis)This set led its a bit of a dance. It was dead with only about25V at the cathode of the h.t. rectifier D604 - the voltagehere should be 119V. Not being familiar with these sets I


disconnected all the outputs on the secondary side of thepower supply and operated it with a 60W bulb across D604as the load. Still no go. I won't go into the long list of thingsthat were replaced. Just about everything on the primaryside of the power supply, also the chopper transformer.There was little left to check, only a couple of capacitors onthe secondary side of the circuit. The culprit turned out to beC608, a 680pF disc capacitor that's connected across D604for protection. It had a leak of about 2ka The lesson to belearnt is that when lifting rectifiers to unload rails don'tforget any protection capacitors present. By the way, anyonewant a chopper transformer going cheap?! M.Dr.

Ferguson 51A3 (TX100 Chassis)There was no channel display, channel numbers or tuning.We found that the regulated 9V supply to the remote controlpanel was missing because TR7 (ZTX650) on the mainpanel had failed. D.J.W.

Finlux FN2144

We've had several faults with this model. No sound andvision was traced to the fusible resistor R44 being open -

circuit because D20 (BY299) in the power supply wasshort-circuit.

No sound with ICP2 open -circuit was caused by theTDA4935 sound output chip having failed.

Excessive width, with the width control having no effect,was caused by D28 (BY299) in the line output stage beingshort-circuit. D.J.W.

Ferguson 20H3 (TX100 Chassis)Intermittent switch off was the symptom with this set. Thecause was the M494 chip IC241 on the remote controlpanel. D.J.W.

Ferguson TX85 ChassisWe've had no sound and vision with several of these setsrecently. One with remote control had no unregulated 16Vinput to the 12V regulator because TR902 (ZTX753) on theremote control/sweep tune board was open -circuit. In othersets the 12V regulator IC6 has been dry -jointed or open-

circuit. D.J.W.

Ferguson TX99 ChassisThere was no sound or vision and a quick check showedthat the h.t. supply to the line output transformer wasmissing. The smoothing choke L21 in the power supply wasopen -circuit. D.J.W.

Ferguson TX100 ChassisA faulty line output transformer has been the cause of nosound or vision in a number of these sets. You find that thevoltage on the 119V line, which feeds the line outputstage, is low and that the line output transistor gets veryhot. D.J.W.

Ferguson TX90 ChassisThere was no sound or vision and the bases, emitters andcollectors of the transistors in the boost voltage regulatorcircuit were all at about 95V. The T9064V line output tran-sistor TRI 12 was open -circuit. D.J.W.

Philips CP110 Chassis

At switch on this set would pulse in and out of standby forup to ten minutes. During this period the audio would alsopulse in and out, remaining for progressively longer until thepicture appeared and all was well. Voltage checks showedthat the outputs from the chopper circuit were all on the lowside, though the rectified mains voltage was o.k. Favouriteculprits for this type of problem are the TEA1039 choppercontrol chip and the CNX62 optocoupler, but replacementsmade no difference.

Attention was next turned to the electrolytics. Be warned!Avoid the practice of bridging any capacitors directlyconnected to the TEA1039 chip while the set is operating.This will quite likely result in the destruction of theBUT11AF chopper transistor, the TEA1039 chip and othercomponents.

After fruitlessly checking all the electrolytics on both theprimary and the secondary side of the circuit we noticed asmall subpanel that's not shown in our service data. Thisboard, located adjacent to the chopper transformer, is amodification that provides over -voltage protection associatedwith the 15V supply. As this is the supply that's monitoredfor regulation purposes, it seemed logical to suspect that acomponent on this panel could be the cause of the trouble. Asmall 100p F capacitor looked a likely suspect, beingmounted just a few millimetres away from a large wire-

wound resistor. Bingo! Replacing it provided a completecure. To avoid a repeat performance it's a good idea to fit thereplacement capacitor on the print side of the subpanel. K.E.

Hitachi CPT1646R (NP84CQ Chassis)

Here's a good one for the unwary. On being called out toretune a customer's TV set and VCR we discovered that theTV set wouldn't search/tune stations. The front panel buttonswere found to be misbehaving, which seemed to indicate asystem control problem. After checking on the price of areplacement SAA1293H remote control decoder chip wedecided to look elsewhere before committing the customer togreat expense. Our notes on this model suggested thatmemory corruption could be the cause of the trouble. Anexcellent article in the August 1991 issue of Televisionexplained how to reprogram the memory. When we carriedout this procedure things returned to normal. K.E

Philips K40 Chassis with TeletextThe normal off -air picture was fine but teletext was very dimwith hardly any contrast. Preset R046 (2.2k12) on the textPCB was open -circuit. When this had been replaced the textcontrast could be easily adjusted. J.E.

Matsui 1420A

This set was dead although the power supply was trying towork. The h.t. was very low and R434 (100, 7W), which isin series with the emitter of the line output transistor, wasvery hot. When the h.t. feed to the line output transformerwas disconnected (pin 4) the h.t. rose to its normal 103V. Anew line output transformer restored normal operation. J.E.

Harwood CT14

The sound was o.k. but there was a blank screen. When thefirst anode voltage was increased we saw that there was fieldcollapse. As the supply to the TDA3651 field output chipwas o.k. we fitted a replacement. This produced field scan,


but it was a third short at both the top and bottom of thescreen. After spending a long time checking the componentsaround the TDA3651 chip to no avail we decided to replacethe TDA4503 chip, which amongst a multitude of otherthings provides the field drive at pin 2. Success at last. I

noted that the waveform at pin 2 was 2V peak -to -peak: thefaulty chip had provided a 1V p -p output. J.E.

Akai CT2870

This large set has developed a stock fault. One leg of thePCB -mounted on/off switch becomes dry -jointed and as timepasses burning and carbonisation of the PCB occur. Theeventual result is the dead set symptom. The switch itself israrely damaged, so a thorough clean up of the board andswitch, followed by resoldering all the switch connections, isall that's required to restore normal operation. J.E.

Matsui 1422This portable was dead. Fortunately the cause was veryobvious. C617 (4,700pF, 1kV) in the chopper circuit hadsplit in half. When a replacement had been fitted the setworked normally. J.E.

Bush 2114TThese little teletext portables, with a TDA4602 type powersupply, are quite often poor at starting. The cause is usuallyfaulty electrolytic capacitors in the power supply. In thisparticular set however the small choke L801 in the choppertransistor's base drive circuit was intermittent. C.W.


The power supply in this set had failed. We found that thefuse was intact and the BUT11AF transistor was o.k. So acheck was made at pin 9 of the TEA1039 chopper controlchip. The start-up voltage here should be 9V but was only2V. A new chip brought the set back to life. C.W.

ITT Compact 80R 110° ChassisThe electronic Luse in the power supply had operated.Disconnecting the scan coil plug and fitting a 60W bulbbetween pin 5 of the connector and chassis brought the h.t.back up to about 120V. As is often the case with these sets,the cause of the fault was a defective line output transformerwith shorted turns. C.W.

Vega 542

The picture displayed by this delightful little monochrome setwouldn't stop rolling. We found that C15 ( 1pF, 100V) whichcouples the input to the base of the sync amplifier transistorTR8 had fallen in value to just a few nanofarads. C.W.

Hitachi CPT2808 (G7P Mk II Chassis)

This set was dead. The mains fuse was intact but the 3.952,7W surge limiter resistor R901 was open -circuit. Did it fallor was it pushed? Checks on the rectifiers and the choppertransistor Q901 didn't show any shorts, and there was ahigh -resistance reading across the mains bridge rectifier'sreservoir capacitor. A scorch mark was noticeable on C919(4.7nF, 1kV) however, and a check showed that it wasleaky. It's in the snubber circuit across the chopper tran-sistor. Since we first came across this fault we've experi-

enced it with a number of other sets. A faulty capacitor willgive readings of a few ohms to a few hundred ohms. C.W.

Matsui 2185The width was short by about a quarter of an inch at eachside of the screen. A check showed that the h.t. was dead onat 110y, so we took a look at the width circuit. Everythinghere was o.k. Full width was restored when the 1.2nF, 2kVflyback tuning capacitor C428 had been replaced. C.W.

Rediffusion/Doric Mk 4 ChassisThis set produced a crinkle -cut picture when cold. It waso.k. when the set had been running for about five minutes. Ashot of freezer on 4C6 (1,000p F, 16V) in the power supplyproved its guilt. It's the reservoir capacitor for the 1.t. supplyused by the chopper control circuit, and can also be respon-sible for the dead set symptom. C.W.

Samsung CI5013TAt random intervals the picture would blank, leaving soundand a dark raster. Pressing the text button would bring up atext display, then pressing the return to TV button wouldrestore the picture. The cause of the trouble was traced tothe 27MHz crystal on the text panel. C.W.

Matsui 2580A look in the back of one of these sets for the first time canbe a bit worrying, as they are full of huge digital chips muchlike the ones used in some ITT models. The power supply isa fairly basic TDA4601 type however, and this set wasdead. After checking some resistors I found that(2701d2) was open -circuit. When this and the chip had beenreplaced the set worked normally. C.W.

Matsui 2580The cause of a dull red on the screen with red flyback linesvisible in only the darkest areas of the picture was traced toIC101 (VCU2133). C.W.

Sony KV2000 Mk IIAt first sight this looked like a blanking fault. The top of thepicture, to about four inches down, seemed to be dark: thenit began to brighten until it became normal. Actually theproblem was that the lower part of the picture was toobright, the top part being correct. The cause of the fault wasthe reservoir capacitor for the supply to the RGB outputstages, C827 (4.7pF, 250V). Note that there were differentversions of this set, with variations in this area. C.W.

ITT 7180Only a loud white noise came from the left-hand speakerof this stereo set. The APU2470 chip IC3201 turned out tobe faulty. It's on the audio/scan panel, next to the h.f.module. C.W.


All the remote control functions operated correctly - butonly if you stood within two feet of the set. The cause of thiswas C2967 (100p F, 10V) inside the remote control receivercan. It decouples the supply to the receiver chip. C.W.


Long-distanceTelevision

Roger Bunney

Conditions remained very quiet during August. Only oneSporadic E opening was noted, at midday on the 13th, whenRAI (Italy) was received on channels IA and IB and CanalPlus (France) was received in channel L3. The troposphericconditions reflected the less than wonderful weather, withfew enhancements. During the middle of the month thePerseids meteor shower produced an increase in Band Isignal pings, though nothing has been reported in Band III.It was perhaps one of the worst months I've reported on forsome years, though of course many correspondents wereaway on holiday.

My own holiday was spent in a Devonshire cottage nearCoombe Martin. The local TV signals came from Wenvoeand suffered from deep fading at dusk across the sea path.With S4C and BBC Wales offering varying quantities ofWelsh programming, the evening entertainment was bleak. Ihad hoped for some reception from Ireland, having takenwith me a Triax active aerial and DX -TV receiver, but theweather was not on my side - despite our being 800 ft up.

Bud Bennet has sent me a copy of the Gulf NewsTabloid, an English -language paper published in Dubai. TheTV listings are interesting, with satellite TV, terrestrial andlocal MMDS (Bahrain) services. Dubai has a ch. E2 trans-mitter which was often received in the UK during the mostrecent sunspot peak. Under Bahrain ch. E55, E57 and E2transmitters are listed. The latter station is called Ptv2 andtransmits mainly Arabic -language programming, from 1200till close down at 2350 during the dates covered. I'll try tofind out more about this transmitter.

Satellite SightingsIan Waller (Lincoln Satellite) reports that his revised

application for permission to install a largish Band C dishhas been turned down by the local planning authority. He isnow appealing to the DOE. One tip from his scanning of the

far horizons: the 11.525GHz downlink from Gorizont at53°E often carries the CIS Channel 6 programmes, whileout -of -hours a St. Petersburg identification has been seen oncolour bars. The C Band uplinks from Rwanda/Zaire toIntelsat at 18°W are in clear PAL and use the identificationsSU10007G and G0003IG respectively.

There's a new channel, La Television Algerienne, onEutelsat II F3 at 16°E, frequency 11.678GHz (horizontal).Another new but this time unidentified (so far) signal comesfrom Telecom 2B at 8°W: the PM5544 test pattern has beenseen with the French Telecom scrolling ident from "SainteAssise".

The NATO airstrike against the Bosnian Serbs in earlyAugust led to careful monitoring of the usual uplinkfrequency via Intelsat at 34.5°W: nothing doing as the linkthis time was via Eutelsat II F1 at 13°E, in the telecomband.

Intelsat K at 2l5°W is at present the main North Atlanticcarrier for news/sports feeds. It's extremely active duringthe day. The best frequencies to check are 11.532 and11.559GHz vertical, and 11.472, 11.499 and 11.665GHzhorizontal. The satellite also carries pan-European OBsports transmissions.

One of the most interesting satellites for trans -UKactivity is the elderly Eutelsat I F4, which is now in aninclined orbit at 25.5°E. Users include Channel 4 with itsbreakfast offering and several horse racing services, thelatter being back -linked to the bookies' feed via 27.5W.

News ItemsIreland: RTE is planning changes to the TV transmissionnetwork which at present uses Bands I, III and u.h.f. Thethird network Telefis na Gaeilge will use u.h.f. exclusively:where new transposers are installed, RTE -1 and -2 will betransmitted from the same mast at u.h.f. The aim is to endthe Gort Band I transmissions and reduce the use of BandIII, services moving to u.h.f.

Sweden: Two more commercial services, M4 and M5, arebeing planned and are expected to be in operation some timenext year. The existing commercial channel TV4 is planningto launch a second, this time satellite -delivered, service.

Switzerland: The German -language S+ channel is to ceaseat the end of the year, to be replaced by S4 on January 1st.This will vary its language depending on region. A new ch.E54 service, Hasli TV, is now in operation for four hours aday in Zurich.

Chile: Canal Plus is to start a subscription service early nextyear, with transmissions initially in Santiago, Valparaiso

Left: The European Parliament feed via Eutelsat ll F3 at 16°E, in the telecom band. Centre and right: Test patternsphotographed by Andrew Sykes during a recent holiday in Canada.


and Concepcion. A joint venture, Comertel, has been set upwith the Chilean company Austral.

Palestine: The Voice of Palestine transmitter is at last inoperation, for some four hours a day on ch. E21.

Gibraltar: George Gaskin reports that a weak ch. E3 signalis being seen daily. The transmitter is at Ronda, a smallSpanish town high in the hills some 80 miles distant.

Amateur TV: Contest activity in all bands. Autumn Vision94 November 12th at 1800 GMT till November 13th 1200GMT; Winter Vision 94 from December 10th at 1800 GMTtill December 1 1 th 1200 GMT.

Satellite TVIntelsat 702 at 1°W has taken over from 512, with more

channels and greater signal strength in the UK - TV Norgefor example can now be received noise -free in southern UKusing a small dish. Sirius at 5°E is now transmitting verystrong DBS-band signals tightly beamed at Scandinavia.CNNI has introduced selective Swedish and Finnish subti-tling for its services via the Thor satellite at 0.8°W. Scandi-navian services, courtesy the Transponder bulletin, are atpresent as follows:

Thor: CNNI 11.785GHz; Eurosport Nordic 11.862GHz;TCC and Discovery 11.983GHz; Fimnet 20.015GHz; MTVEurope 12.092GHz. All RHC polarisation and D2MACEurocrypt.

Intelsat 702: TV Norge 11.016GHz (clear); TV3 Norge11.096GHz; NRK 11.176GHz; TV2 Norway 11.555GHz;TV1000 11.054GHz. All except TV Norge D2MAC Euro-crypt. TV3 Denmark and TV3 Sweden frequencies to beannounced later.

Sirius: TV3 Sweden 11.785GHz; TV6 Sweden11.862GHz; TV4 Sweden 11.983GHz; Filmax 12.015GHz(D2MAC Eurocrypt); ZTV (a music channel) 12.092GHz.All except Filmax RHC polarisation and in the clear.

Tele-X (5°E): Femman 12.476GHz LHC clear. This is nota happy satellite technically.

There are new transmissions from the Middle East. OrbitSatellite Television has introduced six more radio channels,all material being sourced from ABC. Arabsat has boughtCanada's ageing Telsat Anik DI as a stop gap until a newsatellite is launched in the spring of 1996. Anik is estimatedto have a further three years' life though the on -board fuelwill last for only a year, after which the satellite will be ininclined orbit.

Eutelsat has decided to drop digital satellite radio aftertests showed that the noise level in many LNBs was toohigh to support the high -quality, low -noise programming.

When in orbit at 8°W Telecom 2D will be using 11transponders in the same spectrum as Astra 1B (top end ofthe FSS band). It's intended for digitally -compressedMPEG-2 transmissions only, with at least 52dB e.i.r.p.aimed at the south of the UK and France.

The Chinese have launched Apstar 1 at I31°E - next toRimsat at 130°E and the Japanese Sakura 3A at 132°E, sothere could well be interference problems. CNN, ESPNAsia, Viacom, HBO, Discovery, TVB and Reuters have allbooked Apstar transponders.

Thaicom 1 and 2 are now almost fully booked: owner

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Sinawatra is to order two more satellites which could comeinto operation in late 1996.

Getting Started with Satellite ReceptionLast month we considered the dish and LNB/polariser.

The next thing is choice of receiver. Several factors need tobe taken into account: is the receiver to .be used for hobbypurposes only, or will it also provide domestic entertain-ment; what can be afforded; and programming/operationcomplications once you venture beyond Astra.

The first two factors overlap. A tracking dish system thatwould bring a world of entertainment and education intothe home could well be of interest to other members of thehousehold.

Complication is another matter entirely. Modern produc-tion receivers can be very time consuming to programme.Most satellite zappers tend to use a single receiver, I

suspect not too efficiently. It can take a minute or so to tuneacross 970-1,750MHz the Echosphere LT730 for exampletakes 100secs to tune from 950 to 2,050MHz, so to tuneacross both the vertically and horizontally polarised chan-nels from a single satellite will take 200secs - excludinguse of the telecom band.

The front panel readout must be able to display thefrequency that is being tuned, both for the main tuning andaudio subcarrier tuning. Beware of tuners that display onlya channel number or a ramping voltage: they can be incon-venient.

Though not essential a variable i.f. bandwidth is veryuseful with weak signals - say 26MHz wide bandwidth,16MHz narrow. Threshold figures determine the ability to


T411 ifITILLITIThe Satellite Newsline is available, 7 days a week, 24 hours a dayand covers all the latest news, including:

New Channel LaunchesThe Latest Scams and ConsNew Products and ServicesAdult Viewing - What's Really Going OnSmartcards & Decoders - who has What and Where

+ The latest Rumours and Issues Investigated+ All the News that affects the Satellite World

Either Call and listen to todays news in the Satellite World, updatedtwice a day, 7 days a week.

0336-413 413 (VOICE BASED)at Using your Fax machine call this number and follow the instruc-tions for a written copy of the Satellite Newsline. This written copyis downloaded onto your Fax machine immediately.

0336-413 182 (FAX BASED)

UlfP101119111 WilT(11

0336-413 184 (FAX BASED)Using your Fax machine call this number and follow the instructionsfor a written copy of the current Transponder Watch. This writtencopy is downloaded onto your Fax Machine immediately. This Lineis Updated at least 4 times a week and contains:

+ The latest Transponder and Satellite InformationNews on New channelsTest CardsIntermittent use of Transponders

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maximise picture quality. I would look for a 6dB figure,which if threshold extension is available should drop to 3-4dB. Audio may also have a variable bandwidth: oftenreceivers have switched 50p s/J17 characteristics withvarious stereo options. The amount of audio complicationrelates to receiver cost of course.

Decoder looping is essential. As a very minimum thereshould be one out/return path but two is better. Suchlooping will be additional to any built-in decoder, such asVideoCrypt or Eurocrypt options.

Most current production receivers have magnetic outputpolariser connections, though some imports may have the

less convenient three -wire mechanical polariser outputs.With these you can fit an in -line interface box to convertfrom three -wire mechanical to two -wire magnetic operation.

Not being involved in the retail satellite trade, I can'tprovide a definitive list of selected receivers. PersonallyI've used many Echosphere receivers, and apart from thenow discontinued LT530 can recommend them. Enthusiastsspeak well of the Pace range. The MRD920 is capable ofexcellent results, is reasonably priced and is available inPAL, D2MAC Eurocrypt or VideoCrypt versions withoutboard options for motor controls. Other decoders areavailable.

The Amstrad SRD550 is still cheaper and is a remark-able receiver, capable of excellent weak -signal perfor-mance with variable i.f. bandwidth. It comes fully loadedfor the European and Asian channels and has on -screengraphics to provide details of frequency etc. But a word ofwarning here: on -screen graphics are often shown on anotherwise blank screen, only the strongest signals beingseen with inlaid graphics. This is of little use fortransponder zapping with weak signals. Raw video lessgraphics can usually be obtained at a scan output. This isanother point that needs to be considered.

Still cheaper and available in the second-hand market isthe Uniden UST7007, an early receiver that is wellregarded.

My own approach to satellite DXing is to use tworeceivers, an older manual type and a modern one withremote control (the Echosphere SR1000 and LT730 respec-tively). These are fed from the LNB via an active splitter.The manual receiver gives rapid tuning - it takes five -tenseconds to tune across the band for vertical polarisation andanother ten seconds for horizontal polarisation. An i.f.bandwidth filter in the manual receiver's 70MHz i.f. loopmakes it possible to seek out all signals. The modernreceiver can be used for frequency logging if required.

Older manual receivers can usually be found at surplusoutlets. Satellite dealers are usually only too pleased to partwith an otherwise unsaleable trade-in. The Zeta 1000 andSR50 were other popular manual models. Such receiversare still being made and are popular in the developing satel-lite regions - the Middle East, Asia and Africa. Theyfeature useful controls such as bandwidth reduction. AerialTechniques import these specialised receivers: few UKdealers can supply the more basic manual units.

I strongly suggest checking the advertisements in maga-zines such as What Satellite TV which have hundreds ofads. for equipment.

Answer toTest Case 383

- see page 39 -

Here are the SuperSat Solutions!Mr. Wickens' problem seemed tobe incorrect tuning. You'll recallhowever that the new receiver wasbeing used with an older dishassembly - all that was left of theoutfit after a burglar had made offwith the indoor unit. The originalLNB was still in place at the focalpoint of the dish. It had a lOGHz

local oscillator - the usualfrequency until the latest generationof equipment.

The latest receivers are Astra 1Dready. They are intended to be usedwith an enhanced type of LNB, i.e.one with a wider bandwidth and alocal oscillator that runs at9.75GHz. Factory programming ofthe control software is geared tothis. While the receiver will workwith an older style LNB, the tuningand indicated frequencies will be250MHz out. All that's required isto use the handset to reprogram thereceiver for use with a 10GHzLNB. There's a simple menu

choice and the operation was easilycarried out by RT. Mr. Wickenscontinues to twiddle and zap.

Mrs. Trotter's Pace SS9200 IRDwas a different matter altogether.No button -pushing software solu-tions here! To avoid interferenceproblems, an energy -dispersalsignal is superimposed on satellitef.m. picture transmissions. Itconsists of a 25Hz triangular wave-form, which the receiver removesby line -rate clamping after thevision detector. The transistor inthe clamp circuit, Q23, was faulty.A replacement restored steadypictures.

48 TELEVISION NOVEMBER1994

Test Report: The Ozan TeletestPattern Generator

There is less need these days for a pattern generator for fieldservicing than a decade or two ago, when purity and conver-gence setting up were part of the regular routine with setsand five or six twiddlers were provided for grey -scale adjust-ment. There are also far fewer decoder adjustments nowa-days. Nevertheless the field/installation technician stillrequires a test -pattern generator to help with fault diagnosis,setting up and testing.

The Ozan Teletest is a hand-held, PAL colour test -patterngenerator with a IkHz audio test -tone facility. It can producefour patterns: a plain red raster for checking purity; 95 percent saturation (BBC specification) standard colour bars; aneight -level step wedge for grey -scale tracking adjustments;and a crosshatch grid that consists of 17 x 23 white lines onblack with black and white border castellations. The audioand video signals are available separately, at standard levels,from phono sockets or together, modulated on to a ch. 36u.h.f. carrier, from a coaxial socket for connection to theaerial socket of a TV set or VCR.

The unit can be powered by an internal PP3 battery or amains power unit that comes with it and is included in theprice. As supplied, the sound carrier spacing is 6MHz(System I). For use elsewhere in Europe 5.5MHz spacing(System G) is available to order. Likewise EBU and 100 percent specification colour -bar versions can be supplied ifrequired. There's a brief specification in the accompanyingbox.

EvaluationI started my evaluation of the instrument by taking it to

pieces to examine its internal construction. Within I found agood -quality double -sided PCB with eleven assorted i.c.s,two crystals and a total component count of over a hundred.Design and construction look reliable and rugged. sufficientto give many years' service. Having made sure that all waspresent and correct, I got on with testing the unit.

The first thing was to examine the video waveforms. Ifound that the line frequency was within 2Hz of 15.625kHz,which is very good. The field blanking interval, line syncpulses and colour bars are all to CCIR PAL broadcast stan-dards and, when terminated at 7551, the video signal wasfound to be very close to the specified IV peak -to -peak.

When a scope was used to examine the I kHz audio tone itwas seen to be very rounded and pure. This is in markedcontrast to some pattern -generator designs, which produce arough approximation to a sinewave derived by simplefrequency division from a clock pulse train. A good -qualitysinewave is useful, in conjunction with an oscilloscope oreven when listening carefully, for locating sound distortion,clipping and similar effects - whether the sound is injectedvia the u.h.f. tuner or directly into the line input socket. Thechoice of phono sockets for the baseband output signals is agood one as they interface easily, using commonly -availableleads, with the types of AV sockets used in consumer TVand video gear.

Regarding the patterns themselves, the four provided are

Eugene Trundle

certainly the most useful ones for testing, diagnosis andsetting up. There were no signs of the spurious white orblack bars to the left or right of the colour bars and grey -wedge I've seen with some inexpensive generators. A partic-ular virtue of the crosshatch pattern produced by this littleinstrument is the castellations at the picture borders: theyenable picture centring and line phasing checks to be carriedout, while the crosshatch itself checks not only convergencebut also scan linearity, focus performance and definition.

In field service use I felt very much the need for a protec-tive case: rugged though the housing, switches and terminalsare, they deserve protection from the rough and tumble offield service life.

One slight problem did crop up in everyday use: thefactory setting of the u.h.f. output is bang on ch. 36. This isof course the one to which all VCRs are preset. The conse-quence, when feeding a test signal to a VCR with an r.f. linkto the TV set, is in most cases a spectacular clash of carriersand thus patterning. The output can be retuned, but you haveto break a seal and remove the case to do so. Since satellitereceivers are factory -tuned to ch. 38, I would have beenhappier to have had this little generator preset to ch. 34 -with a small, bung -protected hole in the case to permit easyresetting.

Apart from these minor niggles, I found the Teletest to behandy, useful and trustworthy, with many uses I haven'troom to describe here. With respect to value for money, ifthe unit lasts for ten years its ownership cost is twopence aweek. Sounds a bargain to me! This calculation is based onthe limited period offer price of £99 plus VAT, to which£2.50 must be added for post and packing.

AvailabilityThe Teletest pattern generator has a one-year guarantee

and is available from Ozan, 37 Haviland Road, FerndownIndustrial Estate, Poole, Dorset BH21 7SA (telephone no.0202 877 270).

Brief Specification

Composite video output: PAL 4.433MHz 95%chroma (bars), 1V p -p, 7512.

Audio output: 1k-iz sinewave, 1V p -p, 11(12 nominal.

U.H.F. output: Ch. 36 PAL I, 7512 (PAL G available asan option).

Sync: 15,625Hz/50Hz fully interlaced to CCIR specifi-cation.

Size and weight: 155 x 80 x 40mm, 265g.

Power: 9V internal battery or from mains unitsupplied. Operating current 120-140mA.


Toshiba Service BriefsThe following notes are based on information contained in recent issues of the ToshibaTechnical Bulletin.

TV RECEIVERS

Model 1720RBLine tearing after two about hours' use: Q801(STRD4412) in the power supply can fail because ofincreased temperature. To confirm, apply freezer and heat.The replacement part no. is 23314510.

Model 2103TBGNo line or field sync: The usual cause is failure of the 5Vsupply (CCT 5V) to arrive at pin 12 of the teletext modulebecause the 10Q, 0.5W fusible safety resistor RF80 hasgone open -circuit. After confirming that there's no fault inthe teletext module replace RF80, using the correct safetytype resistor (part no. 24531100).

Models 2112DB 2512DB 2527DB 2539DB2812DB 2927DB 2939DB 3327DB and 3339DB

Black flashing lines run up the screen. Symptom getsworse as the set warms up: Cause is a temperature sensi-tive fault in the TA8777N AV switching chip ICV01. Toconfirm, apply freezer to the chip. If this clears the fault,replace the chip (part no. B0383941).

Model 2500TBPicture visible for a few secondly only, then goes toblue mute. While the picture is visible the top third ofthe screen consists mainly of flyback lines and thelower section is stretched out: Cause is increase in thevalue of R448 from 2.70 to around 2352, as a result ofwhich the 12V supply to pins 6 and 61 of the TA8659ANcolour decoder and timebase generator chip falls to about8V. R448 is a safety resistor, part no. 4984279. Note thatif the audio plug P602 is pulled out the set won't bluemute, so the symptom can continue to be seen.

Vibration from the front of the cabinet: This is causedby the channel and volume buttons rattling against thecase. The cure is to refit the button assembly, adding a felttape along the bottom edge of the cabinet between thecabinet and the buttons. A small length of suitable tape isavailable from Toshiba's Technical Department onrequest.

Models 2527DB and 2927DBHum from front speakers at low volume (secondsegment): Cause is hum pickup on the loom. To cure,remove the grey screened lead (with blue sleeve) from themain loom which is positioned across the back terminalPCB. Move the lead, which connects to PAO3A, taping itto the top of the PIF can.

Models 2535DB and 2835DB

Set dead. Power supply is in the over -voltage protectionmode, with the voltage on the main h.t. rail at 11Vinstead of 125V: Circuit protector ZP8 I , type PRF5000part no. 23144451, is open -circuit. Replace it and checkwhether any of the following items are short-circuit: IC670type TA8218AH part no. B0377305; diodes D670-675, alltype 1N4148 part no. 23115599.

Note that in the fault condition the voltage at pin 9 ofIC801 varies between 5-8V and the output voltage controlloop is inoperative as the photocoupler IC826 has nosupply.

VCRs

Models V210B and V211BMachines that have the letter M following themodelnumber are fitted with a new type of head drum. Parts arenot interchangeable with the earlier drum.

Model V312BIn the standby mode the clock display goes off, the headdrum spins, then the display comes back when the drumstops. The cycle repeats: Cause is poor power supplyregulation because of failure of the BCP53 transistor TP91,part no. 70010941.

Models V312B V412B V423B V513B V703Band V813B

All these models incorporate an automatic head cleaner.Replacement of the sponge roller will be necessary fromtime to time. Its part no. is 70353164 and the present tradeprice is 48p plus VAT.

Models V800SC and V880MSNo operation (display heaters glowing) or machinecompletely inoperative: The power supply is in the over -voltage condition, with all power supply output voltageshigh. The cure is as follows: fit a 100p F, -25V capacitor inposition C812; remove C813 and fit a jumper lead in itsplace; fit a 10p F, 50V capacitor in position C809.

TDA4601 POWER SUPPLY

The August 1994 issue (AH49) of the Toshiba TechnicalBulletin provides a detailed account of the operation ofToshiba CTV power supplies that are based on theTDA4601 chopper control chip, which has improvedswitching and better protection than its predecessor typeTDA4600. It's also cooler running. The following models


use this type of power supply: 255R7B, 255T7B, 256T9B,284T8B, 285T8B/BU, 1721TB, 2100RBG, 2100RBT,2100TB5, 2100TBT, 2101TB2, 2101TB5, 2102TB5,2103TB5, 2103TBG, 21 I 2DBT, 2500TBT, 2501TB2,2512DBT and 2812DBT.

Points of interest are as follows. The chip goes into theover -voltage mode when the voltage at pin 3 (error sensing)exceeds 2.3V. The mark -space ratio of the chopper drivewaveform then becomes 244 (off time) to 1 (on time).

From h.t. R837rect. circuit 0.47

Q806BC557B

Q8052SC2230A

Q8032SC2023

R82947k1W On/off

10k command

1k

Switched120V supply

2k7

(SV for on)

Fig. 1: Standby switching circuit used in Model 2100TBT.The circuit incorporates current limiting.

Under excess -current conditions the ramp waveform at pin4 reaches an amplitude of 4V and the mark -space ratio ofthe chopper drive is 13:1. In the event of a short-circuitacross the h.t. line on the secondary side of the choppercircuit the power supply simply squegs quietly. TheTDA4601 chip consumes typically 135mA. The voltage atpin 9 (supply) is approximately 9V in the start-up state and16V under normal running conditions. It must reach 6.7Vfor the chip to start up. The chopper frequency variesbetween 20-70kHz according to load.

Associated CircuitryFor standby operation with this type of circuit Toshiba

incorporates a switching transistor in series with the h.t.line. Circuit details vary with different models. Fig. 1

shows a typical example, used in Model 2100TBT. Theon/off command from the microcontroller chip is fed via aninverting transistor to the base of transistor Q805 whichswitches on to bring the set out of the standby mode. Q804and the series switching transistor Q803 in turn switch onto apply power to the line output stage.

Current limiting is a feature of this circuit. TransistorQ806 senses the current flowing via R837. At 1 A the

2V

1V

Pin 1

Pin 3

Pin 4

7V -

Pin 5

2V

1V --Pins 7, 8

Pin 9

Fig. 2: Waveforms around the TDA4601 chopper controlchip with the drive to the chopper transistor shorted outby linking its base and emitter together.

voltage developed across R837 is roughly 0.5V. Anincrease in the current will increase the voltage acrossR837 with the result that Q806 switches on, shorting

together the base and emitter of Q804 which then, alongwith Q803, switches off. In this way the h.t. current islimited to 1A. In some models a second transistor sensesthe voltage developed across the resistor in the equivalentposition to R837, removing the line drive via the X-rayprotection circuit in IC501 (pin 52) in the event of a highh.t. condition.

The 2112/2512/2812DBT range incorporates additionalcircuitry, centred around a multivibrator, to increase thewidth of the drive pulses to the chopper transistor in thestandby mode. The circuit consists of seven transistors(Q810-13 and Q815-17), an optocoupler plus various resis-tors etc. It ensures that the chopper transistor switches onand off reliably in the standby mode, improving the relia-bility of the circuit.

Fault Finding HintsAs an aid to fault finding the power supply can be oper-

ated with a 60W bulb as the load, with the feed to the lineoutput stage disconnected. If the set is dead, a check on thevoltages at the collector and emitter of the transistor in theQ803 or equivalent position will quickly prove whether thefault is in the remote control section of the set or the powersupply. Remember that the remote control system switchesonly the 120V (or 145V, depending on tube size) rail: allthe other power supply outputs will be present as long asthe set is plugged in and switched on (this does not applywith the 285T8B/BU however).

The TDA4601 chip can be checked as follows. Short-circuit the base and emitter of the chopper transistor. Thewaveforms shown in Fig. 2 should be present at the speci-fied pins of the chip. If they are all correct the chip and thecomponents immediately connected to it are usually o.k.

BACK COPIESWe have available a limited stock of the followingback issues of Television:

1992 February, April, May, July, August,September, October, November andDecember

1993 January. May, June , July,August, September, OctoberNovember and December

1994 January, February, March, April, May,June, July, August, September,and October

Copies are available at £2.75 each includingpostage. Send orders to:

Television Back Issues,Room L302,Quadranit House,The Quadrant,Sutton,Surrey SM2 5AS.

Make cheques/postal orders payable to ReedBusiness Publishing Ltd.


Adding ExtraLNBs

Sian William Ewan

Provided the satellite positions are neither too close nor toofar apart it's possible, by mounting an extra LNB on thesupport arm, to use a single offset -focus dish to receivesignals from two satellites. For example signals fromEutelsat II Fl at 13°E can be received using a dish aimed atthe Astra position (19.2°E). The principle can be extended,with three LNBs mounted on the support arm.

A Second LNB

We'll assume that you wish to add an extra LNB to anAstra installation to receive Eutelsat II F1. It's important toavoid any alteration to the existing dish position.Remember also that working on a ladder is inherentlydangerous. The greatest care should be taken to avoid acci-dents.

Fig. 1 shows the general arrangement. You'll need thefollowing to add a second LNB:

4 support arm clamps2 LNB clamps2 through bolts4 nuts and washers1 long LNB support arm clamp bolt1 cross -head LNB clamp bolt2 nuts and washers for the above.

Proceed as follows:

(1) Fit a nut and washer to one end of each of the twothreaded through bolts. Slide two clamps on to the bolts toform the new arm support - the curved ends should faceeach other.

(2) Slide a third clamp on to the bolts, with the curved

Fig. 1: Offset -focus dish with a second LNB fitted. 1 dish;2 support arm clamp for second LNB; 3 original LNB; 4position of extra LNB; 5 main tubular LNB supportarm;6 LNB lip used as support.

end away from the two clamps already fitted.

(3) Position the third clamp against the existing LNBsupport arm. Slide the fourth clamp on to the remaininglengths of the two bolts.

(4) Fit the washers and nuts to the through bolts. Don'ttighen them at this point.

(5) Fit the LNB clamps around the neck of the secondLNB. If in doubt about this, refer to the existing LNB. Feedthe cross -head bolt through the top of the clamp. Fit nutinto the nut recess and tighten.

(6) Slip LNB clamp on to support arm and feed boltthrough hole. Fit washer and nut then tighten.

(7) Slide LNB and its support arm into the clampassembly just fitted to the existing dish support arm.

(8) Position the second LNB to the left of the existingone, as viewed from the dish, so that the blue cap is sittingin front of the existing LNB. The back of the cap shouldjust touch the front of the existing LNB cap.

(9) Slide new arm support clamps to about half wayalong the new support arm, keeping the new LNB in theposition just established.

(10) Lower the front of the new support arm so that thenew LNB sits slightly higher than the existing one.

(11) Tighten the nuts on the support arm clamps tosecure the LNB in this position.

(12) Fit new cable run or fit a masthead switch and usethe existing cable for both LNBs.

(13) Tune in additional channels. Euronews is at11.575GHz (V) for example, Eurosport at 10.972GHz (H),MTV Europe at 11.658GHz (V) and Super Channel at10.978GHz (V).

Alternative ArrangementsFig. 2 shows various alternative arrangements. The addi-

tion of a second LNB as just described is depicted at (a).Where reception of the extra satellite is weak the arrange-ment shown at (b) may give better results. Mount thesecond LNB to the right of the original one. Align the dishso that the original LNB receives Eutelsat II F1 then adjustthe added LNB for Astra reception.

Fig. 2 (c) and (d) show three-LNB arrangements, theidea being to receive signals from Eutelsat II F4 at 7°E aswell. In this case you'll need two more support arm clamps,two more LNB clamps, another long LNB support armclamp bolt and cross -head LNB clamp bolt and two morenuts and washers. Pre -assemble the LNB support arm thenfit by slipping the additional LNB support clamps on to theend of the through bolts. Put the new support arm in place.Again remember to keep the added LNB slightly in front ofthe original one, using the small lip near the bottom of theoriginal LNB to support the rear corner of the lip of thenew one.

Dish realignment will be required. Select a channel allo-cated to one of the transponders at 13°E. Loosen the largesingle bolt that runs down through the adjustment bracket.Move the dish to the right, slowly, observing the results on


B A B A C B A A B C

(a) Ib) (c) Id) MIFig. 2: Alternative arrangements when adding two/threeextra LNBs. A LNB for Astra (19.2°E), B LNB for Eutelsat11 Fl (13°E), C LNB for Eutelsat Il F4 (7°E).

a monitor - or have someone do this for you. Once thesignal has been found, some slight left -right adjustmentmight be necessary to obtain the best results on all chan-nels. Do not adjust the up -down position of the dish. Tunein signals from Eutelsat II F1 and F4 as required.

Finally, it's possible to use two LNBs to receive Eutelsatsignals from 7°E and 13°E. Or, with careful adjustment, toalign the dish so that the original LNB receives signalsfrom Eutelsat II F2 at 10°E and the added LNB, on theright as shown in Fig. 2 N. receives Astra signals.

ADVICE TO NEWCOMERS

To work in the radio and TV trade in the Fifties, Sixties andSeventies was intersting and satisfying. There was somerubbish around of course. But to the customer it was theirpride and joy. TV sets were expensive, and repairs werepriced accordingly. Many retail shops that sold these productshad their own service department. Spares were usually avail-able off the shelf, and were common to many makes. Serviceinformation was readily available, and manufacturers werehelpful when there was a problem. Component companiessent reps around frequently to prompt orders.

The mid -Eighties saw the start of the trade's decline,though VCRs and then video libraries produced a boost. Thenshops started to close down, manufacturers became reluctantto stock spares for products even five years old and compo-nent companies made their reps redundant. The lower price ofnew TV sets and VCRs led to cheaper and uneconomicrepairs. Some service manuals are, when available, tooexpensive for a one-off repair, and some manufacturers are nolonger helpful. The rising cost of overheads and the lowerreplacement price of new equipment mean that a lot of workis required to bring in a reasonable wage.

Large service companies linked to large retail/rental/discount organisations are probably the safest bet forthe newcomer to the trade, and possibly also for customers.The self-employed working from home will get some busi-ness but will be regarded as being a part timer, the customerexpecting to pay him less than 'shop prices'.

The key to success in this business is to have some capital,shop premises in a good location and a good range of recon-ditioned colour TV sets and VCRs. A good working knowl-edge of servicing a large range of products is also necessary.Ideally you'd be a young but not inexperienced personprepared to work hard for long hours against stiff competitionfrom the discount houses etc. and the cowboys who cancharge £25 for changing the video heads and carrying out afull VHS machine service.

Do not borrow money to start your business, otherwiseyou'll be working for the bank. The tax man will take a fairchunk of your income and so will your accountant. Rates andthe rent/mortgage payments for the shop premises will relieveyou of another large lump. Telephones, stationery etc. somemore. In this era of vandalism and burglary, security andinsurance will be costly. When your turnover reaches theVAT level you will have to register. That will mean chargingan extra 17.5 per cent more for your repairs than the chapwho works part time from home.

If you can handle all this, with a regular turnover to coverall overheads, tax etc., and still have enough to pay yourself a

reasonable wage with some money over to invest in yourbusiness, then go ahead. Don't forget the 'closed' period forholidays etc.: you will have to cover the cost of this fromyour open times.

Believe me, I would be the first person to rejoice ifTV/video repair shops made a comeback, with good honestcompetition.Eric Edwards,Barry, South Glamorgan.

COWBOY STUDENTS?

There have been many letters in your pages about cowboys.As a mature student with a family, studying for the City andGuilds 224 electronic servicing certificate on very littleincome, I am constantly looking for work within this industry- and find it very difficult. To supplement my income inorder to support my dependants I install satellite equipmentfor family and friends etc. and also do small repair jobs onTV sets, VCRs and so on. When I say "small" that's what Imean, i.e. belts, heads etc. I would never dream of under-taking a large or complicated repair, because I have neitherthe knowledge nor practical experience - which I feel is moreimportant than the qualification.

Every one of my fellow students supplements his incomein this way. Probably every service engineer who started atcollege had to do the same thing.

Would I call myself a `cowboy'? I think not. I'm simply ahard-working student trying to gain my qualification andsome practical experience with very little money.David ones,Bury. Lancs.

WE ALL NEED HELP

I was pleased to find that there are still companies out therewho help us in this game. Without help from Toshiba Tech-nical one of their sets would still be on the workbench. It'snice to know that when I sell Toshiba products I get ToshibaTechnical help. I've had to stop selling the products of severalmanufacturers who won't provide technical data.

May I also mention Willow Vale's technical informationman Alan Dyson? If you've an account with WVE, all tech-nical help is free and covers. most makes. Thank heavens forToshiba, Panasonic; JVC and all the other companies whoprovide technical back-up - and let's not forget Alan Dyson.M. Cordner, M & M Videos,West Norwood.

BACK INJURIES

I wish to make available to all in the trade the fullergonomist's report on back trouble caused by lifting TV sets.It states in simple English why no one should lift a TV set onhis own. The law is on the side of the employee in this matter:you don't have to lift a TV set on your own without help or

TELEVISION NOVEMBR 1994 53

one of the aids available for the purpose.I can supply the eleven -page report at £25 a copy. It will

be sent direct on receipt of a cheque payable to H.J. Todd.Solicitors acting for an injured person will be supplied.Harry Todd, clo 12 Oakhurst Close,Snaresbrook, London E17 3PZ.Telephone 081 520 8003.

A WARNING

In February we received from the Edinburgh area an AmstradPCW9512 that suffered from intermittent crashes. As with somany similar faults in the 8000/9000 range, the cause was theusual dried-up reservoir capacitor in the 5V supply. Thecustomer sent a cheque to cover the repair plus returncarriage, which was done by a well-known intercity courier.

The customer subsequently called to say that when heopened the package the computer's case was broken and itdidn't work. We contacted the courier who said that they hada clean signature for the package. We were neverthelessasked to examine the computer and provide a repair estimatewhich would be passed to the insurers.

The damage was consistent with the computer havingdropped on one corner from a great height. We sent our esti-mate to the courier.

There followed a demand from the insurers, via thecourier, for a copy of the original receipt. We contacted thecustomer, who supplied the information.

A 'without prejudice' offer of 50 per cent of the estimatewas sent to us. So we telephoned the courier to point out thatthe matter was really between them and the customer. Wewere only 'piggy in the middle' so to speak.

Wrong! We had asked the company to return the goods, sothe contract therefore exists between us and them. Further-more couriers provide liability insurance that's calculated atso much per kilo regardless of the contents. If a clean signa-ture exists, the onus is on the claimant to prove negligence.

So we had to accept or get involved in a no -win legalbattle. The cheque was received in the middle of August!

There are two lessons. (1) Let your customers arrange theirown transport. (2) Always write 'unexamined' under yoursignature when accepting a package.Gus Cusick,Preston, Lancs.

A SIDELINE

For the last four years we have been carrying out Safety andFunction tests on behalf of a local second-hand business.Anything electrical or electronic that they buy at auction isbrought to us before being put up for sale. We inspect theitem, repair it where necessary to make it safe, carry out theapproved tests and make sure that the thing works as it wasdesigned to do.

The horrors exposed by this sideline have been an eye-opener to myself and everyone else here. Why there aren'tmore fires and deaths from electrocution I will never know.Truly some people's guardian angels must be on overtime.

The table lamp with damaged flex and a single -pole in -lineswitch in the neutral side of the supply is only par for the

course. Fuses are made from tin foil and in one case we founda one -inch nail. Cable clamps? "Oh, so that's what the thingywith the two screws is for!"

We've had a spate of plug wiring faults recently. I find itdifficult to imagine the sort of mind that will make theconnection to the neutral side by pushing the pin up, insertingthe wire so that it's trapped between the pin and the side ofthe plug when the pin is pushed down again, then taking thelead across the top of the pin to where it should have been tostart with. The practice of supplying leads with equal lengthsof earth, live and neutral wires, all carefully tinned, is thank-fully no more. It merely made the more naive amongst thepopulace fold all this excess wire into the plug. This ensuresthat the plug manufacturer's careful safety design is totallynullified, since in the event of the cable clamp losing its gripthe live instead of, in a correctly wired plug, the earth connec-tion will be the last one to break.

How about an electric iron with bare wires in a leadcovered with Elastoplast and Sellotape? Or the very nice3kW, two -bar fire that had been in daily use until the death ofits owner, from natural causes we were surprised to learn, aweek previously: the lead was so old that when it was movedthe rubber insulation showered from it like sand, leaving bare,very tarnished wire.

We occasionally come across a real beauty. For example avery clean, new -looking microwave oven. It was perfectexcept for the fact that someone had parked his spurs along-side and replaced the three -core lead with a two-core one,leaving the chassis and case unearthed.

The worst excesses seem to occur in the white goods field.This is perhaps because things stay with the family for solong, and there's always the relative or friend who knows allabout electricity and won't charge half as much as 'themdown the road'. Brown goods seem to be relatively free fromreal nasties. The occasional badly -wired, cracked or damagedplug is about average, though we get the odd VCR that hashad WD40 squirted into it before being hurriedly sold to oursecond-hand dealer.

If anyone feels like getting involved in this type of work,there are a few principles that should be followed. First,always start with the mains plug. Look inside it. You neverknow, the live and neutral leads may be crossed or there maybe part of a six-inch nail acting as a fuse. Secondly, check thelead. Ask yourself whether it should be a three- or two -corecable? Has the proper one been replaced with a lighter type?Thirdly, once you are satisfied that the plug and the lead areo.k. open the thing up if possible and inspect the interior thor-oughly before you start your safety tests. Don't forget to useyour nose. It will detect WD40 and the like even where novisible trace of it remains.

Always remember that you are engaged in a contest withWild West Repairs Unlimited, and that they will get you ifyou don't keep your wits about you. And always use an isola-tion transformer when applying power for the first time. Afterall you don't know where the equipment has been, and haveno idea of its history.

I hope that I've not made it sound too fraught. You justhave to be careful. It's then a steady little earner.P. D' Alquen,Pickering, N. Yorkshire.

Published on the third Wednesday of each month by Reed Business Publishing Ltd, Quadrant House, The Quadrant , Sutton, Surrey SM2 5AS. Filmset-ting by Wace Publication Imaging, 2-4 Powerscroft Road, Sidcup, Kent DA14 5DT. Printed in England by BPCC Magazines Division, Carlisle WebOffset, Cumbria. Distributed by Marketforce (UK) Ltd., 247 Tottenham Court Road, London W1P OAU (071 261 5555). Sole Agents for Australia andNew Zealand, Gordon and Gotch (Asia ) Ltd.; South Africa, Central News Agency Ltd. Television is sold subject to the following conditions, namelythat it shall not, without the written consent of the Publishers first having been given, be lent, resold, hired out or otherwise disposed by way of Tradeat more than the recommended selling price shown on the cover, excluding Eire where the selling price is subject to currency exchange fluctuationsand VAT, and that it shall not be lent, resold, hired or otherwise disposed of in a mutilated condition or in any unauthorised cover by way of Trade oraffixed to or as part of any publication or advertising, literary or pictorial matter whatsoever.


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U208A X5 £4.50 BUTI1AFU508A X5 £3.60 BU426AU508AF X5 £5.00 TDA4601UT11A X5 £2.25 TDA3654hilips type 1.2 volt Back up batteryhilips type 2.4 volt Back up batterycart - Scart lead 1.51n Fully wired

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X5 £3.25 3V29 etc. Belt kit X5 £4.50X5 £3.75 3V35/36 etc. Belt kit X5 £4.25X2 £2.55 VT11E etc. Belt kit X5 £5.50X2 £2.50 Standard video sensor lamp X10 £2.50X5 £430 Standard video sensor lamp 4- plug X10 £4.00X5 £8.75 Thorn TX9/10 Rempte control each £7.49X2 £2.90 Thorn TX10 Green spot LOPTX each £14.95

Satellite PSURepair/Refurb kits

Experience in one of the largest repair centreshas shown that all repairs to Power supplyunits require special treatment with not onlythe obviously faulty parts being replaced but anumber of others also changed to ensure asatisfactory repair. Experience shows that upto 50% of all power supply repairs 'bounce'unless the correct procedure and the correctprecautionary changes to certain componentsare made.

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IMPORTANT ANNOUNCEMENTALL SATELLITE RECEIVERS purchased before MAY 1994

It is almost certain that if you purchased your satellite receiver before May1994 you will be unable to receive all the projected channels when theybecome available on ASTRA 1D neither will you be able to receive the lowertwo channels on ASTRA 1C. The lower two channels on ASTRA 1I3 areFilmnet Movies (H - 10.921) and RTL-5 (V - 10.934). These are broadcastingnow. If you wish to receive these two channels now and the projected possible16 channels on ASTRA 1D when it is launched later this year, you will need topurchase extra equipment. The SUPER 'D'CONVERTOR is a clever, lowcost frequency convertor which] can be purchased now. Millions of satellitereceivers will need converting in Europe so it is good advice to buy now whilestocks are readily available.

Can I receiveAST

Method 11) Purchase an enhanced satellite receiver with tuning

range of 950 - 2050 MHz2) Purchase an LNB with a conversion frequency of 9.75

GHz3) I3ook an engineer to install the equipment

Method 2 TOTAL COST AROUND £2001) Purchase a SUPER 'D'convertor2) Install the SUPER 'D'convertor - All by yourself:

TOTAL COST EXACTLY £29.95What is a SUPER 'D'convertor ?The super 'D'convertor is a small box (110mm x 60mm x 50mm) which isinserted into the down lead from the satellite dish at the rear of the receiver(no power supply is required). A suitable connecting lead is supplied togetherwith end user simple instructions. At the flick of a switch or in most cases atouch on the remote control, channels on ASTRA 1D can be tuned in whenavailable. The bottom 2 channels on ASTRA IC which up to now you may nothave been able to tune in, will be immediately available.

Personal callers welcome or dispatched sameday - Payment by PO's or Credit Card. Allow 7 days for cheques

Send £31.95 to include Post & Handling.

PHONE (0902) 773 1 22 FAX (0902) 29052International F'Imonie -I- -I- 44 902 773122 Fax -4- -I- 44 902 29052

32 'Temple Street, WolverhamptonEconomic Devices WV24ANT, United Kingdom_Also available - D2mac Decoders - RTL Decoders - Secom/PAL Transcoders - A/B Switches

Tone Switches - Multiswitches - Please phone for current prices.Larger Quantity Trade enquiries welcomed_

"ELEVISION NOVEMBER 1994 57

NIKKOELECTRONICS

JAPANESE COMPONENTS SPECIALISTSELECTRONIC COMPONENTS DISTRIBUTORS (IMPORT/EXPORT)

OVER 8,000 DIFFERENT PARTS IN STOCKTRANSISTORS INTEGRATED CIRCUITS

2SA BD BUY AN LM SAB TC2SB BDW DTA BA M SI TCA2SC BDX DTC CX MB SLA TD2SD BF MJ HA MC STA TDA2SJ BT MJE KA MDA STK TEA2SK BU 1 N KIA MEA STR TTL3SK BUT 2N LA MN STRD UPCAD BUW 1 S LB NE TA UPDBC BUX TIP LC SAA TBA CMOS

ASK FOR OUR CATALOGUE MAIUTELEPHONE/ORDERING COUNTER SALES

NIKKO ELECTRONICS LTD.DALBANI HOUSE, 257 BURLINGTION ROAD. NEW MALDEN, SURREY KT3 4NE, ENGLANDTel: 081-336 0566 Fax: 081-336 0579 -081-395 6003

DALBANI (UK) LTD.

AMSTRAD HANDSETSVCR4500VCR4600, 4600Mk11VCR4700VCR5200VCR6100 (Indexer)VCR6100 (Barcode Indexer)VCR6200 BarcodeVCR9000 (Old type)TVR 2TVR 3SRD400SRD400 (Equivalent)SRD500SRD510/520TS90/99 Tower SystemGOODMANS VCR102PROLINE 5100TX

AMSTRAD LOPTSCTV1000 FB182KCTV1400 FB165KACTV1401/9 3714002CTV2000 FBI 71CTV2200 FB171KCTV2200 3722002CTV2210 3722002TVR3 181297PCW9512,8256,8512

AMSTRAD TUNERSUE33-B01 VCR4600/4700UE2-B31 F CTV2200/22101810829 VCR5200ENV87509F2 CTV1400UVE33-F01 VHF -UHFUVE33-F02 VHF -UHF1813766 VHF -UHFFX9600 FAX PSU

18.0811.7517.6311.7525.8532.4432.4411.758.46

14.1018.1511.0511.7513.8111.7511.7517.63

12.9323.5022.3310.5810.5815.2815.2814.697.05

9.405.887.055.88

14.1014.1014.1029.38

HarrisonElectronicsCENTURY WAY, MARCH, CAMBS PE15 8QW.

FAX: (0354) 51416. TEL: (0354) 51289

AMSTRAD IF UNITSTPS7-130006 VCR4600/4700TPS7-L00021813766

AMSTRADMODULATORS18108221 VCR5200ENP-E730-2 VCR7000VCR4600Mk11,4700SR D100/200/400

AMSTRAD SERVICEMANUALSVCR4600VCR4600Mk11,4700VCR6000/6100VCR7000VCR8700VCR8800VCR9000/9004VMC100SRX100/200SRX100/200 SRD400SRD510/520PC1512PC2086PC2286PC2386PC3086FX9600 FAX

AMSTRAD COMPUTEROPERATORS MANUALPC1640PC2286/2386PPC512J640PC1512 (Tech. Ref.)PC1640 (Tech. Ref.)

AMSTRAD VCRCABINET PARTSVCR4500 Cabinet FrontVCR4700 Cabinet FrontVCR6000 Cabinet Front

9.4014.1014.10

7.055.887.057.05

9.009.00

11.509.008.009.759.00

16.504.70

11.506.50

11.5012.0012.0015.0011.0015.00

11.7511.7511.756.008.00

15.2812.9315.28

VMC100 - Various parts available,please phone for prices.

AMSTRAD VCR DECK4500CASSETTE HOUSING ASSY. 17.63CYLINDER ASSY. (incl. Videoheads) 26.44CYLINDER LOWER DRUM ASSY.(Excl Motor) 10.28

4600, 4700, TVR1,2,3Head Base Assy. (Audio) 5.88

AMSTRAD MOTORSLoading Motor MCB9B02 3.53Drum Motor E20EL05 10.87Capstan Motor LLA4B02 10.28Capstan Motor JLN4602 10.28Tape Loading MCF9B02 9.99Cassette Housing RF28OR 9.99

AMSTRAD PCB's(Complete, fully populated)4500 Timer4500 Systems Control4600 Systems Control/Servo,Display & Control PCB's4600 Display4600 Control4600 Video & Audio4600 Power Supply4600Mk11 Main PCB Assy.4600MkIl Timer4600Mk11 Control4600Mk11 Head Amp4600Mk11 Power Supply4600Mk11 Hybrid, Luminance4700 Main PCB Assy.4700 Timer4700 Control4700 Head Amp Assy.4700 Power Supply5200 Timer & Channel Disp.

31.7312.93

6.4619.9816.9843.1715.286.465.886.469.40

43.1715.286.465.886.46

18.81

10.95-11.7GHz LNB2.3dB NF. 'N' CONNECTOR 17.63(DRAKE, NO FEED HORN)

5200 Video 15.285200 Switch Panel 5.886000 Power Supply 8.816100 Main PCB 31.736100 Audio PCB 7.056100 Power Supply 8.816100 Hybrid, Chrominance 9.406100 Hybrid, Luminance 9.407000 Switch PCB no:7 2.35CTV1400 Mkll Main TV PCB 31.73CTV1400 Switches, Presets & Tuner(ENV87509F2) 9.70CTV2200 PCB no:3 3.53CTV2200 PCB no:4 4.70TVR 2 Main TV PCB 41.13TVR2 Video Front Display PCB

15.88TVR 3 Main TV PCB 47.00TVR 3 Head Amp Assy. 5.88TVR 3 Video Power Supply 6.46

AMSTRAD PC12MD12.9310.58 VGA MONO MONITOR

Suitable for use with 2000/3000series and any other VGA compatiblePC (Carr. at Cost) 64.63

AMSTRAD SOFTWAREACCOUNTSMASTER 19.98(Full accounts program for runningsmall business on any PC)LINKMASTER 12.33(For copying files between PCs)Many AMSTRAD COMPUTER &PRINTER SPARES available, pleasephone for price.

PRICES INCLUDE VAT.ALL ITEMS ARE BRAND NEW AND GUARANTEED

** SAME DAY DESPATCH * *

Write or Phone for FULL LIST

**POST & PACKING****£1.18** 110.4


RENTAL FINANCE

Expand your CTV and VCR rentalbusiness with no capital outlay and

increase your profitability.

Broughfame has the solution andtheir rental finance plan will provide

facilities from £2,500 upwards.

For further details ring or write to BobWickham at the address below:

BROUGHFAME LIMITED115A ST JOHN'S HILL

SEVENOAKSKENT TN1 3 3PE

Telephone: (0732) 743400Fax: (0732) 743335

WE HAVE THE WIDEST C HOICE OF USEDOSCILLOSCOPES IN THE COUNTRY

TEKTRONIX 7000 SERIES OSCILLOSCOPESAVAILABLE FROM £200 Plupins sold separately.

TEKTRONIX 2465 4 Channel 300MHz Delay Sweep etc L1750TEKTRONIX 2236 Dual Trace I ODMHz Delay Sweep Counter/Torner/DMM L1150TECKTRONIX 485 Dual Trace 350MHz Delay Sweep _L750TEKTRONIX 475 Dual Trace 200MHz Delay Sweep L500TEKTRONIX 465 Dual Trace 100MHz Delay Sweep .....0400TEKTRONIX SC504 Dual Trace 80MHz on TM5038 as

L500IWATSU S55711 C Channel 100MHz Delay Sweep/DMM [500TRIO C52070 4 Channel 70MHz Delay Sweep L450TEKTRONIX 2215 Dual Trace 60MHz Delay Sveep 0450KIKUSUI CCS5060TM 3 Channel 60 MHz Delay Sweep ..[450PHIUPS PM32 I 7 Dual Trace SOMHz Delay Sweep L400GOULD 051100 Dual Trace 30MHz [161)GOULD 05300 D.I Trace 20MHz 02110IWATSU 955702 Dual Trace 20MHz L200TRIO CS I566A Dual Trace 20MHz [200GOULD 0525061 Da True 15MHz L125

THIS IS JUST A SAMPLE - MANY OTHERS AVAILABLE

HEWLETT PACKARD 1740A OSCILLOSCOPES100MHz Dual Trace. Delay Sweep For only [350

MARCONI 2018 Synth AM/FM Sig Gen 130KHz-520MHz [700N.P. 86408 Sig Gen 20Hz-1024MHz .11000H.P. 8620C Sweep Oscillator with 86245A 59-124GIO L400SYSTRON DONNER 1702 Syn Sig Gen 100Hz.IGH1 ......L600RACAL 9081 Synthesized AM/FM Sig Gen 5-520MHz 0500FARNELL SSG520 Synth AM/FM Sig Gen 10-520M14z 0400MARCONI 1E2003 AM/R1 Sag Gen 10K/461041M1 Sweep 0200MARCONI TF2015 AM/FM Sig Gen 10-520MHz 0200MARCONI TF2015 with Synch TF2171 (Lock boa)............ L350PHILIPS PM5326 AM/FM Sag Gen 100KHe I 00MHz L300H.P. 86908 Microwave Sweep Osc 26.5.4008z . L00H.R. SMITH ANTENNA type 12302-4 02000MARCONI 6500 Automatic Amplitude Analyser [1500RP 436A Power Meter with sensor 0 1000RACAL INSTRUMENTAllON REORDER type Store 4DN 0500H.P. 3575A Gain Phase Meter I Hal3MHz 1400HP 3312A Furs Gen O. I Hz- I 3MFIr AM/FM. Sweep, Stn/Sq;Tr [480MARCONI 7F2337 Automatic Distortion Meter [200SAYROSA Automate Modulation Meter type 25213............ [125TEKTRONIX CPS250 Triper Output MU 2n2000.5A Var.5V2A FoodTEKTRONIX CFG250 Foe Gen 0.21521011 SeeSq/TNTTL..-[110TEKTRONIX COM250 Died Makireeter 31/2 dl,, Led .--_[ ISO

SPECTRUM ANALYSERSHP 8565A 0.0122Gh11 15000HP. 853 with 8559A 0.012104z..

ANIUTSU MS62B with Tau Gen 10KH8-1700411+ 11500

ANDO Aceni with Aan 1 I 17110MHz __--_._L1500H.P. 182 .S1185588 100KJ4z1503MIO -11500HP. 141T with 8558 8 85528 500KHz-12-508941 11200H.P. HIT we:118553138 eS52A IKHz-11014 [800MARCONI TF2370 3011a-110MHz 11008HP 13444 fli 8443 Tracking Gmenom Available from - OLOHP 141T Man Frames only. Goad Tubes _-..--025

H.P. 3456A DVM 61a doge DCTrue RhIS AC/Res HPIB___[103EP/DANA 35ID MAyave Freq Counter 2011-I EIGIMHP. 534IA Frequency Coaxer 5089H1-15GHzMARCONI 2435 Digital Frequency Meter 2G1 -ft 1400RACAL 1998 Freq Canter 1.36111 (Opo GAB B High 515 _LNGRACAUDANA 1991 Ccunter/Tmer I SOMH1 9MARCONI 2437 Counter/Tuner DC I 00MHz 3 digit__ 0I75MARCONI 24316 Freq Counter I 0Hz-200MHz B dipt_ 0150MARCONI 2430A Frequency Cosner 101.11430Mho 8 kit Cl2SRACAL 9918 Frequency Counter 10Hz-520MHz 9 digit- C200RACAL 9913 Frequency Meter 10Hz-20011Hz 8 digit [125RACAL 9911 Frequency Meter 10Hz- I 20MHz !digit__ [100RACAL 9905 Unienal Counter/Tmer DC-200P1Hz 8 disk _C I SORACAL 9904 Universal Corms/Timer DCSOMHO kr__1175RACAL 9901 Universal Comer/Tyner DCSOMIO 6 dpit_I 00DATRON 10616 6/2 digit Autccal Multimeter True RP1S AC/Current 1850HP. 34906 5 den Matirreter AODC/ChrraHP. 34356 31/2 digs MAI ACIOC/Olwe/Current Led ----LIM,PHIUPS PM2534 MW Fync DrIM 31/24 dr GRIVIEEE _LA50SOLARTRON 7150 41/2-1 V2 digit DMM with IEEE £400SOLARTRON 7045 4V2 Opt Multimeter VonsAaripaChrns .110WAYNE KERR 8905 Automats Precoon &Ike 005% 0900MARCONI TF2700 Unreal Bridge BY Op from II SOMARCONI TF 13136 Urevenal LCR Bn* 0 I% 1115WAYNE KERB 0424 Digital Component Meta LCR .... .0200HEATHK1T 18 FILC BridgeBRADLEY 192 Oscilloscope Calbrator [600WILTRON 560 Sokr Network Arelyser with Detectors -[1000HP Sgremse Kerne.FARNELL 30/100 0-30V. 0-100A Mowed LAMFARNELL M7042 70V SA/35V 10A Metered-- 0300FARNELL B30/10 300 10A. Variable 0200FARNELL 030E (3.30V: Metered L125MAROCNIONNI)TF21510XN IA 015V 2A1175VIA Mena. LAO

M.P. 0516A0-3Ky 0-6MA Plasm/ - L150BRANDENBURG WAS 472R ± 234V Metered L200FEEDBACK FG603 SSe/SFri 0.011-b- I MOOLYONS PG7I N Pulse Gen PRE 1141..5111.1z 10 renceacs----L75FARNELL PG101 Pulse Gen 100nSecs 10MHz (15ec 1 Pk) -[12.5UNDOS LAI PP2B Audio Ardor. LE00UNAOHM EP501 Azako 11350

PHILPS PMSSI8 Colour TV Pattern Gets:rm. ---.(1250

RADFORD LOM52 Low Di .e Measurkp L300

NEW EQUIPMENTHAMEG OK -CM 14110:15 T/Vk Tact 1004.11 Da* flaw 047HAMM 0/5COPEHM604 Dui Trace60MHz DebySwev__LeS3POPEGOSCOPER1201 7 DA Trace 201148Covp Toss_a062MOOG OSCOPE F1 X05 3 Dui Trace 21111-11 DI& Scrap 1853

All cater models meek- al oklloscopes weed w182 probes

BLACK STAR EQUIPMENT (P&P a .no 05)APOLLO 10 - 100MHz C FMK PaboTeriodaime

APOLLO 100 - 100804 (As oboe elth more funcsons).-.. _02.5METEOR 103 FREQUENCY COUNTER 1 COMHz____ _[ 119METEOR 600 FREQUENCY COUNTER 600MHz____ L145METEOR 1000 FREQUENCY COUNTER IJUNIOR 500 FUNCTON GEN 0.1 lix-5CORHESE-05q/En__LI 19ORION COLOUR BAR GENERATOR PELTYNidea -MR

All other Mack Sr &ppm. araiable

OSCLLOSCOM MOSESSwechable Y I x 10 (P&P 0)

Used Equipment - Guaranteed. Manuals suppled d possible.This is a VERY SMALL SAMPLE OF STOCK, SAE or Telephone for list Please check availability before ordering.

CARRIAGE 01 units L 16. VAT to be added to Total of Goods and Carriage.

AM]

STEWART of READING110 WYKEHAM ROAD, READING, BERKS RG6 Ilk

Telephone: 0734 268041 Fax: (0734) 351696Callers Welcome 9am-5.30pm Mon -Fri (until 8pm Thurs)

TUBESSPECIAL THIS MONTH

3708B22 New £3951JRU4OX New £645109622 New £64

We SELL New, B grade,regunned and

ex -equipment tubes.Many types ex -stock

We BUY New or B gradesurplus tubes (boxed orin cabinets). Also 66 and

68cm used FST glass(must not be broken

or have faultyshadow mask)

1000's of C.R.T'sin stock

Ring Irene or Jane forprice and availability

Carriage and VAT momVISA

extra

EXPRESS TVThe Mill, Mill Lane,

RUGELEY, Staffs WS15 2JW

Tel: 0889-577600Fax: 0889-575600


NO REWIND?NO PROBLEM

FAST FORWARD TOEURAS SYSTEM

Video technology is changing fast. New models get introducedwith alarming regularity, each with the latest enhancement.So it's not surprising to find models and faults you've notencountered before.

The problem is you can spend costly, unchargeable timesearching for elusive faults, which is where Euras System can help.

The Euras System is Europe's largest repair tips databasefor Video, Television and CD.

With over 140,000 repair tips for 15,000 models from 270manufacturers you are sure to find the solutionquickly. And because it is frequentlyupdated, it always covers thelatest models.

For a FREE demonstrationdiskette to run on your PC ordetails of Euras System in manualform, clip the coupon or phone0272 860900.

EURAS INTERNATIONAL LTDEURAS HOUSE, 51 BRISTOL ROAD,KEYNSHAM, BRISTOL, BS18 2BA

$11%

FREEDEMODISKETTE

ELIV5 te5

[URA TV 11/94 A

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NAME

TITLE

COMPANY

ADDRESS

POSTCODE TEL

TV FREE VCRCOMPONENTS

CATALOGUEHUGE RANGE OF SPARES

COMPETITIVE PRICES

TV TUBESRE -PROCESSED

NEWB GRADE

Over I 50 Types in Stock

VISTA are BSI approved

VIDEOHEADS

Manufactured by Vista to Hi -Tech

Specifications

150+ types available covering

2000+ VCR models

TECHNICALHELP -LINE

lectronicsFOR CUSTOMER CARE AND SERVICE CALL

TUBES: 0429 837100

COMPONENTS: 0429 838057

FAX: 0429 837101

( Access 1

Atik,Vista Electronics Ltd

Unit I B, Wingate Grange Industrial Estate, Wingate, Co.Durharn, TS28 SAH.


PC PAL VGA TO TV CONVERTER Converts a colour TV intoa basic VGA screen. Complete with butt in psu. lead and sAvareE49.95. Ideal for laptops or a cheap upgrade.

EMERGENCY LIGHTING UNIT Complete unit with 2 doublebulb floodlights, built in charger and auto switch. Fully cased. 6v BAHlead acid req'd (secondhand) E4 ref MAG4P1 IGUIDED MISSILE WIRE. 4.200 metre reel of ultra thin 4 coreinsulated cable, 281bs breaking strain. less than 1mm thick! Idealalarms. intercoms, fishing, dolls houses etc, £14 99 tel MAG15P5SINCLAIR CA 13" WHEELS Complete with centre bearing(cycle type), tyre and inner tube. E6 ea ref MAG 6P10. Ideal go kart300r PANELM ETER7OXSOX5OMM, AC, 90 degree scale. Goodquality meter £5.99 ref MAG 6P14 Ideal for monitoring mains etc.ASTEC SWITCHED MODE PSU BM41012 Gives +5 (12 3.75A,+12@1 5A, -120.4A 230/110. cased, BM41012. Ea 99 ref AUC,6P3.TORRODIAL TX 30-0-30 480VA, Perfect for Mosfet amplifiersetc. 120mm die 55mm thick E18.99 ref APR19.AUTO SU NCHARGER 155x300mm solar panel with diode and3 metre lead fitted with a agar plug. 12v 2watt. E9.99 ea ref AUG10P3.

FLOPPY DISCS DSDD Top quality 5.25' discs, these have beenwntten to once and are unused. Pack of 20 is £4 ref AUG4P1MOD WIRE Perfect for repairing PCB's, wire wrap etc. Thininsulated wire on 5COm reels. Our price just £9,99 ref APR10P812v MOVING L IG HT Controller. Made by Hella. 6 chan nee ratedat 90watts each. Speed control. cased. E34.99 ret APR35.ECLATRON FLASH TUBE As used in police car flashing lightsetc. full spec supplied. 60-100 flashes a min. E9.99 ref APR10P524v AC 96WATT Cased power supply New. £13.99 ref APR14MILITARY SPEC GEIGER COUNTERS Unused and straightfrom Her majesty's forces. £50 ref MAG 50P3STETHOSCOPE Fully functioning stethoscope, ideal for listeningto hearts, pipes. motors etc. E6 ref MAR6P6.OUTDOOR SOLAR PATH LIGHT Captures sunlight duringthe day and autanatically switches on a built in lamp at dusk.Complete with seales lead acid battery etd£19 99 ref MAR20P1,ALARM VERSION Of above unit corneswith built in aiarm and Orto deter intruders. Good value at just £24.99 ref MAR25P4.CLOCKMAKER KIT Hours of fun making your own clock, com-plete instructions and everything you need £7.99 ref MAR8P2.CARETAKER VOLUMETRIC Alarm, will cover the whole dtheground floor against forcred entry. Includes mains power supply andintegral battery backup. Powerful internal sounder, will take externalbell if req'd. Retail £150+. ours? £49.99 ret MAR50P1.TELEPHONE CABLE white 6 core 100m reel complete with apack of 100 clips. Ideal phone extns etc. £7.99 ref MAR8P3IBM PC CASE AND PSU Ideal base for building your own PC.Ex equipment but OK. £9.99 each REF: JUN10P2.MICRODRIVE STRPPER Small cased tape drives ideal forstripping, lots of useful goodes including a smart case, and lots ofcomponents. E2 each ref JUN2P3SOLAR POWER LAB SP ECIAL You get IWO 6'x6' 6v 130mAsolar cells, 4 LED's. wire, buzzer, switch plus 1 relay or.motorSuperbvalue kit just E5.99 REF MAG6P8SOLID STATE RELAYS Will switch 25A mains Input 3.5-26vDC 57x43x21mm with terminal screws £3.99 REF MAG4P 10300DPI A4 DTP MONITOR Brand new but shop soled so hencebargain price! TTLJECL inputs, 15' landscape, 1200x1664 pixelcomplete with circuit diag to help you interface with your projects.JUST E14.99. REF JUN15P2M U LTICORE CABLE 300 metre reel of grey 8 core cable idealfor 'phones, intercomms. computers, alarms etc. Comes inspeaaldispens ng container to avoid tangles. E15 ref AUG15.BUGGING TAPE RECORDER Small voice activated recorder,uses micro cassette complete with headphones. E28.99 ref MAR29P1.

U LT RAJA IN I BUG M IC 6mmx3.5rnm made by AKG,,5- 12v dectretcondenser. Cost £12 ea, Our? four for E9.99 REF MAG10P2.RGB/CGA/EGA/TTL COLOUR MONITORS 17 in goodcondition. Back anodised metal case. £79 each REF JUN79GX4000 GAMES MACHINES returns so ok for spares or repair£9 each (no games) REF MAG9P 1C64 COMPUTERS Returns. so ok for spares etc £9 ref MAG9P2FUSELAGE LIGHTS 3 foot by 4' panel 1/8' thick with 3 panelsthat glow green when a voltage is applied. Good for night lights frontpanels, signs,disco etc 50-100v per strip. £25 ref MAG25P2ANSWER PHONES Returns with 2 faults, we give you the bits for1 fault, you have to find the other yourself. BT Response 200's £18ea REF MAG18P 1. PSU £5 ref MAC,5P12.

SWITCHED MODE PSU ex equip, 60w +5v 65A, -5v@ 5A.+12v@2A-12v@ 5A 120/220v cased 245x88x55mm IECinputsocket £6.99 REF MAG7P1PLUG IN PSU 9V 200mA DC £2.99 each REF MAG3P9PLUG IN ACORN PSU 19v AC 14w , £2.99 REF MAG3P 10POWER SUPPLY fully cased with mains and op leads 17v DC900mA output. Bargain pnce E5.99 ref MAG6P9ACORN A RCH PA EDES PSU +5v a 4 4A on/off sw uncased,selectable mains input, 145x 100x45mm £7 REF MAG7P2GEIGER COUNTER KIT Low cost professional twin tube. com-plete with PCB and components Now only £19 REF AUG19.9v DC POWER SUPPLY Standard plug in type 150ma 9v DCwith lead and DC power plug. price for two is £2.99 ref AUG3P4.AA NICAD PACK encapsulated pack of 8 AA nicad batteries(tagged) ex equip. 55x32x32mm. E3 a pack. REF MAG3P 1113.8V 1.9A psu cased with leads. Just E9.99 REF MAG10P3360K 6.26 brand new half height floppy drives IBMcompatbleindustry standard. Just £6.99 REF MAG7P3PPC MODEM CARDS. These are high spec plug in cards madefor the Amstrad laptop computers. 2400 baud dial up unit completewith leads. Clearance once is E5 REF: MAG5P1INFRA RED REMOTE CONTROLLERS Originally made forhi spec satellite equipment but perfect for all sorts of remote controlprojects. Our clearance price is just £2 REF: MAG2TOWERS INTERNATIONAL TRANSISTOR GUIDE. Averyuseful book for finding equivalent transistors, readouts, specs etc£20 REF: MAG20P1SINCLAIR CS MOTORS We have a few left without gearboxes

NEW BULL ELECTRONICS STORE IN

WOLVERHAMPTON55A WORCESTER ST TEL 0902 22039

Spec is12v DC 3,300rpm £25 ref MAG25.

NEW PRODUCT200 WATT INVERTER Converts 10-15v DC intoeither 110v or 240v AC. Fully cased115x36x 156m m, complete with heavy duty powerlead, cigar plug, AC outlet socket.Auto overloadshutdown, auto short circuitshut down, auto inputover voltage shutdown, auto input under voltageshutdown (with audible alarm), auto temp control,unit shuts down if overheated and sounds audiblealarm. Fused reversed polarity protected. outputfrequency within 2%, voltage within 10%. A ex-tremely well built unit at a very advantageousprice!!!Price is £64.99 ref AUG65.

UNIVERSAL SPEED CONTROLLER KIT Designed by us forthe C5 motor but ok for any 12v motor up to 30A. Complete with PCBetc. A heat sink may be -required. E17.00 REF: MAG17MAINSCABLE Precut black 2 core 2 metre lengths ideal forrepairs, projects etc 50 metres for 0.99 ref AUG2P7.COMPUTER COMMUNICATIONS PACK Kit contains 100mof 6 core cable, 100 cable dips, 2 line dnvers with RS232 interfacesand all connectors etc Ideal low cost method of communicatingbetween PC'sover alongdistance. Ccrnpietekit£15,99 Ref MAR16P2.MINI CYCLOPS PIR 52x62x4Omm runs on PP3 battery completewith shrill sounder Cheap protection at only £5.99 ref MAR6P4.ELECTRIC MOTOR KIT Comprehensive educational et in-cludes all you need to build an electric motor. £3,93 111 MAR10P4.VIDEO SENDER UNIT. Transmits both audio and video signalsfrom either a video camera, video recorder, TV or Computer etc toany standard TV set in a 100' range! (tune TV to a spare channel) 12vDC op. Price 15E1 5 REF: MAG15 12v psu is E5 extra REF: MAG5P2FM CORDLESS MICROPHONE Small hand held unit with a500' range! 2 transmit power levels. Reqs PP3 9v battery. Tuneableto any FM receiver Price is El 5 REF: MAG15P1LOW COST WALKIE TALKIES Par of battery operated unitswith a range of about 230 Ideal for garden use or as an educationaltoy Price is E8 a pair 'REF: MAO W1 2 x PP3 req'dMINATURE RADIO TRANSCEIVERS A pair o' walide talkieswith a range of up to 2 kilometres in open country. Units measure22x52x155mm. Compete with cases and earpieces 2xPP3 req'd.E30.00 pair REF: NAGS°.COMPOSITE VIDEO KIT. Converts composite video into sepa-rate H sync, V sync, and video. 12v DC. E8.00 REF: MAGSP2.L03600 PRINTER ASSEMBLIES Made by Amstrad they areentre mechanical printer assemblies including pnnthead, steppermotors etc etc In fad everything bar the case and electronics. a goodstnpperl E5 REF: MAG5P3 or 2 for £8 REF: MAG8P3SPEAKER WIRE Brown 2 core 100foot hank E2 REF MAG2P1LED PACK of 100 standard red 5m reds E5 REF MAG5P4UNIVERSAL PC POWER SUPPLY complete with flyleads,switch, fan etc. Two types available 150w at £15 REF.MAG15P2(23x23x23mm) and 200w at £20 REF: MAG20P3 (23):23x23rnm) FM TRANSMITTER housed in a standard working 13A adapter!!the bug runs directly off the mains so lasts forever! why pay E700? orprice is £26 REF: MAG26 Transmits to any FM radio. FM BUG KIT New design with PCB embedded coil for extrastability. Works to any FM radio. 9/ battery req'd. £5 REF: MAG5P5 FM BUG BUILT A N D TESTE D superior design to kit Suppliedto detective agenaes 9v battery req'd £14 REP MAG14TALKING COIN BOX STRIPPER originallymade to retail at£79each. these units are designed to convert and ordinary phone into apayphone. The units have the locks missing and sometimes brokenhinges. However they can be adapted for their original use or used forsomething else?7 Price is just E3 REF: MAG3P1100 WATT MOSFET PAIR Same spec as 2SK343 and 2SJ413(8A,140v,100w) 1 N channel, 1 P channel, £3 a pair REF: MAG3P2TOP QUALITY SPEAKERS Made for HI Fl teleesionsthese are10 watt 4R Jap made 4' round with large shielded magnets. Goodquality. E2 each REg: MAG2P4 or 4 for £6 REF: MAG6P2

TWEETERS diameter good quality tweeter 140R (ok with theabove speaker) 2 for £2 REF: MAG2P5 or 4 for £3 REF: MAG3P4AT KEYBOARDS Made by Apricot these quality keyboards needjust a small mod to run on any AT, they woncperfectlybut you will haveto put up with 1 or foreign keycaps! Price E6 REF: MAG8P3PC CASES Again mixed types so you take a chance next one off thepile £12 REF:MAG12 or two the sane for £20 REF: MAG20P4HEADPHONES Ex Virgin Atlantc. 8pairsfor£2 REF: MAG2P8PROXPAITY SENSORS These are small PCB's with what looklike a source and sensor LED on one end and lots of components onthe rest of the PCB. Complete with fly leads. Pack of 5E3 REF: NAG:3P5 or 20 for ES REF: MAG8P4

*SOME OF OUR PRODUCTS MAY BE UNLICENSABLE RI THE UK

SNOOPER." EAR? Original made to dip over the earpiece oftelephone to amplify the sound -it also works quite well on the cablerunning along the wail! Price is £5 REF: MAGSP7DOS PACKS Microsoft version 3.3 or higher complete with aftmanuals or pr ce just £5 REF: MAG5PS Worth It just for the verycomprehensive manual! 5.25' only.DOS PACK M icrosoft version 5 Original software but no manualshence only £3 REF: MAG3P8 5.25 only.PIR DETECTOR Made by famous UK alarm m anufacture, theseare hi spec, long range internal units. 12v operation. Slight marks oncase and unboxed (although brand new, E8 REF: MAG8P5WINDUP SOLAR POWERED RADIO AM/FM ratio completewith hand charger and solar panel! E14 REF. MAG14P1MOBILE CAR PHONEE6.99 Well almost! completein carphoneexduding the box of electronics normally hidden under seat Can bemale to illuminate with 12v also has bUtt in light sensor so displayonly illuminates when dark. Totally convincing! REF: MAG6P6ALARM BEACONS Zenon strobe made to mount on an externalbee box but could be used for caravans etc, 12v operation. Justconnect up and it flashes regularly) £5 REF: MAG5P 11FIRE ALARM CONTROL PANEL High quality metal casedalarm panel 350x165x80mm.With key. Comes with electronics butno information. sale price 7.99 REF: MAGBP6REMOTE CONTRO L PCB These are receiver boards for garagedoor opening systems. Another use? £4 ea REF. MAG4P5

6-X12" AMORPHOUS SOLAR PANEL 12v 155x310rnm130mA Bargain pnce just £5.99 ea REF MAG6P12.FIBRE OPTIC CABLE BUMPER PACK 10 metres for £4.99

MAGSP 13 ideal for experimenters! 30 m for £12.99 ref MAG13P1

LOPTX Lire output transformers believed to be for IBM hi res colourmonitors but useful for getting high voltages from low ones! £2 eachREF: MAG2P12 bumper pack of 10 for E12 REF: MAG12P3.HEATSINKS (finned) T0220, designed to mount vertically on a pcb50x40x25mth you can have a pack of 4 for El ret JUN1P11.WATERPROOF JU NCT PON BOX 65mm die 33mm deep. Fourcable entry exit pants (adjustable for any size cable) snap Pt lid. Idealfix W. satellite use. E2 ea ref APR2 or 6 for El0 ref AP R10P7.

BOTH SHOPS OPEN 9-5.30SIX DAYS A WEEK

INFRARED LASER NIGHT SCOPESSecond generation image intensifiercomplete with hand grip attachmentwith built in adjustable laser lamp forzero light conditions. Supplied withPentax 42mm camera mount andnormal eye piece. 1.6kg, uses1xPP3,3xAA's (all supplied)E245+VatNEW HIGH POWER LASERS15mW, Helium neon, 3 switchablewavelengths .63um,1.15um,3.39um(2 of them are infrared) 500:1 polarizerbuilt in so good for holography. Sup-plied complete with mains powersupply.790x65mm. Use with EX-TREME CAUTION AND UNDERQUALIFIED GUIDANCE. £349+Vat.££££L£IWE BUY SURPLUS STOCKUUM

TURN YOUR SURPLUS STOCK INTO CASH.IMMEDIATE SETTLEMENT. WE WILL ALSO QUOTE FOR

COMPLETE FACTORY CLEARANCE

1994 CATALOGUE.MINIMUM GOODS ORDER ES CCI TRADE ORDERS FROM GOVERNMENT. SCHOOLS.UNIVERSI r ES &LOCAL AUTHORITIES WEL COME ALL GOODS SUPPL IEDSUBJECT TOOUR CONDIT IONS OF SALE MID UNLESS OTHERWISE STATED GU ARANT E ED FOR 30DAYS RIGHTS RESERVED TOCHANGE PRICES & SPECIFICATIONS WITHOUT PRIORNOTICE ORDERS SUBJECT TO STOCK QUOT AT IONS WILL INGL v GIVEN FOR GUNNTITLES UK HER THAN THOSE STATED

3FT X 1FT 10WATT SOLAR PANELS1 4.5v/700mA

£33.95(PLUS SIDO SPECIAL I ACKAGING CHARGE)

TOP QUALITY AMORPHOUS SILICON CELLS HAVE ALMOST ATIMELESS LIFESPAN WITH AN INFINITE NUMBER OF POSSIBLE AP-PLICATIONS, SOME OF WHICH MAY BE CAR BATTERY CHARG-ING, FOR USE ON BOATS OR CARAVANS, OR ANYWHERE APORTABLE 12V SUPPLY IS REQUIRED. REF: MAG34

BULL ELECTRICAL250 PORTLAND ROAD HOVE SUSSEX

BN3 5QTMAIL ORDER TERMS: CASH PO OR CHEQUEWITH ORDER PLUS £3.00 POST PLUS VAT.

PLEASE ALLOW 7 -10 DAYS FOR DELIVERYTE LE 3HONE ORDERS WELCOMEIn TEL: 0273 203500 vii".11411

FAX: 0273 323077

PORTABLE RADIATION DETECTOR

£49.99A Hand held personal Gamma and X Ray detec-tor. This unit contains two Geiger Tubes, has a 4digit LCD display with a Piezo speaker, giving anaudio visual indication. The unit detects highenergy electromagnetic quanta with an energyfrom 30K eV to over 1.2M eV and a measuringrange of 5-9999 UR/h or 10-99990 Nr/h. Suppliedcomplete with handbook.Ref MAG50.


COLOURTRADEESTABLISHED 1973 - WHOLESALE ONLY

NEW 'B' GRADEMajor Brands ONLY Satellite, Receivers, Decoders,

Microwaves TV - Video - AUDIOCOMPLETE BOXED - WITH STAND - HANDSET - BOOK ETC

MINT LATEST NICAM FASTEXT F.S.T.

FERGUSONFULL RANGE - ALL CURRENT MODELS OF TV -VIDEO IN STOCK

NATION-WIDE NEXT DAY DELIVERY SERVICE - VISITORS BY APPOINTMENT

Phone 021-359 7020VISA

FAX 021-359 6344221-222 BRIDGE ST WEST, HOCKLEY,

BIRMINGHAM B19 2HU - JUST OFF M6 -J6

MANUFACTURERS 'B'GRADED STOCK

Televisions, VideosAudio, Music Centres

Microwave Ovens

Complete, reboxed, workingCurrent model stock

Turner Lyons Enterprises Ltd9 Howard Place,

SheltonStoke on Trent ST1 4NN

Phone David or John

0782 285416

APPROVED

TELEPRICE

DISTRIBUTOR

6t,DISTRIBUTORS[LQD..) co co Cpl

Suppliers of high qualityTHORN D( -RENTAL STOCKDirect from source

PHONE FOR DELIVERY DAYS ON

081 803 0505UNIT E2/3, Stonehill Business Park, Lea Valley Trading Estate,

ANGEL ROAD, LONDON NIS 3LD

JUNCTION25

25

MP

40,

5

ANGEL RD

LZA VALLI,/

TRADINGNETATI

25

NM.

JUCTIoNI>

LARGE CARPAID(

WE ARE -HERE


TV WHOLESALE

HOCKLEY DISCOUNTTELEVISIONS

Biggest Suppliers of:-Television, Video, Audio andElectronic Accessories -1000's T.V./Video Components

Full Range of:-Batteries, Remote Controls,Audio/Video Blank Tapes

Example- E180 V.H.S. TAPE - from 751)

UNIVERSAL T.V. REMOTES - from £8.95

Large Selection of "B" Grade Stock Arriving Daily

14" 'B' Grade Colour Portables from £80.00For more Information:

GIVE JAZZ A BUZZoN 021 515 2003

OR FAX 021 515 2004140 HOCKLEY HILL, HOCKLEY, BIRMINGHAM B18 5AN

Trade TV's and VIDEOBest Prices in the North

WE STOCK: Philips, Thorn, GEC, Hitachi, Sharp,Grundig, Finlandia, Salora, Rediffusion, FST's,

Nicam Portables etc.

Example of Prices are:WORKING TEXT £45OFF THE PILE TEXT £25

WORKING FRONT LOAD VIDEO £50 (slim Modern)OFF THE PILE £25

These prices include everything and are ready to go,unless delivery required (Anywhere in UK or Ireland).

Also Mail Order working panels for most of the makeslisted.

For more InformationRING:

YORKSHIRE NORTH WESTMick Sharp David Walker

Stadium TVS B.W. ElectronicsNew Delight Works Stockfield MillBoothtown Road Melbourne Street

Halifax Chadderton, OldhamTel: 0422 320553 Tel: 061 627 0774

10 mins from 5 mins fromJunction 24 M62 Junction 20 M62

CENTRALWHOLESALE DISTRIBUTOR

STOCK HIGHSUPERB STREET

RANGE OF ARRIVING TRADE INTVS AND DAILY from

HOTELVIDEOS DISPLAY

THORN AND AND

GRANADA STOCK

EX -RENTALTVS FROM

13.00EstablishedEX-RENTAL

1979VIDEOS FROM

f25.00PHONE TODAY

'FOR BEST

, RESULTS SANYODIRECT CAMCORDERLOADS NOW IN STOCKAVAILABLE SPECIAL PRICE ATFORBUYERSQTY f 269.99

* STAR BUY ---- 1 -r.1-1 2'

1..1111_PrOl 164a

FERGUSON FV6 I LV

* STAR,../___

)10

___

_-..L. -7. 1

'.

_____°

_

BUYVIDEO PLUS LP/SPSingle Qty 5

-t,..4 . £169 E159-a. ..... ..--

SAMSUNGGHETTOBLASTER

CD/STEREO RADIO CASSETE REC

Single Qty I 0£44.99 £39.99

FERGUSONBS9N NICAMSTEREO TV

Special price at 1329.00* STAR BUY £279.99

FERGUSONNOW IN STOCK

ALL CURRENT MODELSOF TV's VIDEOS

PACKAGE DEAL SSP 1999FV6I LV VCR

B59N 25" NICAM TV X435GOOD INVESTMENT

FOR XMAS

EXPORT ENQUIRIES WELCOME

NATIONWIDE QUANTITY BUYERSPLEASE CONTACTDELIVERY ASH IN B'HAM

Microwave I +L69.00 5+165.00 Special TDK D90 Audio Tape (0.48

Ferguson Stereo Special TDK E180 Video Tape L1.50

TV Speakers 1+09.99 5+L 14.99 Special Sony E180 Video Tape 11.35

TVNideo Stands 1+ L5.00 10-L3,00 Special E 180 Video Tape L0.75

WE NOW STOCK AUDIO & VIDEO ACCESSORIES,BATTERIES, REMOTES, SATELLITE EQUIPMENT

[Al] CENTRAL TV WHOLESALEDISTRIBUTION LTD

London contact: Joshi Birmingham contact: MickEley Estate, Nobel Road 369 Stratford Road. SparkhillEdmonton N18 Birmingham B11Tel: 081-807 4090 Tel: 021-772 1591Fax: 081-884 1314 Fax: 021-766 6383


TV WHOLESALE

GREATER MANCHESTER'S NO 1 WHOLESALER

RED BANK uNMANCHESTER

AZ REFPAGE 50

2A

HERESTRUGGLING FOR STOCK?WE HAVE GOT WHAT YOU NEEDTHORN and GRANADAPORTABLES and F.S.T's

AVAILABLE NOW!!Televisions from £5, F/loading Videos from £20

Working Teletext from £35, 1,000s of TVs and Videos in stockFRESH STOCK ARRIVING DAILYRING NOW FOR STOCK UPDATE

*Export Enquiries WelcomeOpen 10am - 5pm Mon -Fri

UNIT 20, RED BANK ARCHES,MANCHESTER M4 4HF

CHEQUE ACCESS VISA

W.M.T.V.THE LARGEST INDEPENDENTWHOLESALERS IN WALSALL

- SUPPLIERS OF HIGH QUALITY EX -RENTALTVs AND VIDEOS TO THE TRADE

AT COMPETITIVE PRICES

ALSO AVAILABLE: NEW B -GRADE PRODUCTS- TVs, VIDEOS, AUDIO & MICROWAVES -

ALL TESTED & BOXED1/2 Mile of Junction 10 M6. Easy Parking Facilities

UNIT 3, BENTLEY LANE BUSINESS PARK

BENTLEY LANE, WALSALL WS2 8TLTel: 0922-724542. Fax: 0922-722208

Mobile: 0831-246622 (24 Hours)OPEN:

MON-FRI,9-6pm

SAT 9-2pmSUNDAY BY

APPOINTMENTDELIVERYSERVICE

THROUGHOUTTHE COUNTRY

B -grade Stock All Boxed, workingIf you require one item please read on:

10" R/C Portable14" Basic Portable14" R/C Portable20" R/C20" Text21" FST R/C21" Fastext FST21" Nicam25" NicamL/P VideosStereo Midi SystemMicrowave OvenTV & Video Stands

£95£85£95

£119£139£145£165£219£259£99

£110£50£3

DISCOUNT

ON

QUANTITY

THIS MONTHS SPECIAL20" Fastext TV's £125 & 20" NICAM £145

EX RENTAL TVsDirect from source. Untouched

Basic TVs £5, £10 and £15, R/C £20Teletext £30. Videos from £25

Customer returns in block.Example. Untested 3x21" FST 3x25' FST6xF/L Videos £40 each. Total £480+VAT

This price does not include handsets.Some in need of repair. Some working.

W TREE WAREHOUSE

UNIT 1, SUNSHINE MILLS, WORTLEY RD, LEEDS 12TEL: 0532 638804 FAX: 0532 310275


TV WHOLESALEA low ;elk

EAST ANGLIA'S PREMIER WHOLESALER

FST * FASTEXT * PORTABLES * REMOTESEX -RENTAL TV & VCRsTOP QUALITY STOCKBEST POSSIBLE PRICES

RING FOR DETAILS (0362) 691611DIRECT LOADS AVAILABLE - DELIVERY SERVICE

EXPORT ENQUIRIES WELCOME

ANGLIAN T.V. WHOLESALEUnit 4, Brecklands Business Centre

Tavern Lane, East DerehamNorfolk NR19 1PX

Tel/Fax: (0362) 691611OPEN MON-FRI 9.30am-5.30pm

CHRISTMAS WILL SOON BE HERE!!DON'T BE LEFT SHORT!

STOCK UP NOW AT SUMMER PRICESLARGE STOCKS AVAILABLE NOW!!

WE STOCK: HITACHI, PHILIPS, GEC, FERGUSON, GRUNDIG, SHARPS, etc.Front Loading VideoStandard TVs off the pileTeletext TVs off the pile

from only £20from £5

from £30

F.S.T. Text TV untestedF.S.T. Text testedNICAM Teletext

from £40from £80

from £120 workingLarge Quantity of very late model Videos wrapped with Handset and Instructions,

Guaranteed - only f65l!makes include Hitachi, Solara, Akai, Sanyo, Philips, Ferguson, etc.

"SPECIAL" Slim Modern Front Loading Video working perfectly only £45!!New TVNideo Stands £3.00. Replacement Panels available

Testing Facilities Available, Delivery Arranged (UK)Open Mon/Fri 9 to 5, Sat 9 to 4, Sunday by appointment

Visa/AccessFew minutes end of Motorway Ring our Hotline

(M62/M606) 0274 308186FREE!! Coffee, Tea, Pop, Bacon/Sausage/Egg Sandwich or Altogether, Loud Music (Cabaret when available)!

Call Today- Bring Money!!

BESCO LTDServing the Trade for over 25 years

Walker House, Bottomley Street, Bradford0274 308186


TV WHOLESALE

NEW WAREHOUSE OPENS FRIDAY 21ST OCTYES, DUE TO GOOD SUPPORT FROM TRADERS AS FAR AFIELD ASSHEFFIELD, SCOTLAND & MANCHESTER, I HAVE HAD TO RE -LOCATE TOA NEW INDUSTRIAL UNIT IN

MIDDLESBROUGHEASY ACCESS FROM THE MAIN A19/A66. PLEASE PHONE FORDIRECTIONS. LOADS OF PARKING.

PORTABLES £40 (NOT FROM £40, THAT'S THE PRICE AND LOADS OF EM)

F/L VIDEO £40 (NICE CLEAN CASES, NO RUBBISH)

F.S.T. - TEXT - BASICS - ALL IN STOCK

ALL WORKING STOCK- GOOD TESTING FACILITIES AVAILABLE

TRADERS PLEASE NOTE - WE DO NOT HAVE RETAIL PREMISES.ALL PRICES PLUS VAT. NEW TRADERS CASH ONLY.

SUPERSCREEN 0642 250850 0831 7154235 REDESDALE COURT, FOREST GROVE BUSINESS PARK

RIVERSIDE INDUSTRIAL ESTATE, MIDDLESBROUGH, CLEVELAND

IRISH TV DEALERSLARGE QUANTITY OF

RECONDITIONED BRAND NAMET.V'S AND VIDEOS AT VERY

KEEN PRICES, IDEAL FOR SALEOR RENT.

QUANTITY DISCOUNT,DELIVERY ARRANGED

" EXPORT ENQUIRIESWELCOME"

T.V. TRADE SALES,E.D.I. HOUSE,

KYLEMORE PARK WEST,BALLYFERMOT

DUBLIN 10TELEPHONE

01 6264139 / 6263517

C.T.V. (NORTH EAST)9A/B, 94 Carrmere Road

Leechmere Ind. Est.Sunderland

SR2 9TE

No. 1 in the North Eastfor all makes and modelsof high quality ex -rental

televisions and video recordersat very competitive prices

091-523 5554Fax: 091-523 8035

Export Enquiries Welcome66 TELEVISION NOVEMBER 1994

TV WHOLESALE

BRITAIN'S LARGEST INDEPENDENT

HCTl

TV & VIDEO WHOLESALERS

LTD

WE EXPORTFAX THE BIGGEST WHOLESALER FOR THE BEST DEALS

AUTUMN SPECTACULARStock Up NOW

Fantastic Deals on Ex -Rental Stock

17

-------z?,

26,.

G09*-0 A STOCK 4zooA-4" S ' tio4%

06 00 4 1, 1'4,S f4Z4

lb i -N NICAM TV's AND VCR's AT RIDICULOUS PRICES4/z4 -f>.

PHILIPS CDI ALSO AVAILABLE494,

BIG NAME BRANDS AND OUR MOST COMPETITIVE

PRICES EVER!RING DEREK OR AJAIB FOR OUR BEST OFFERS YET

PRESTON

439 Oakshott Place

Walton Summit

Ind Est

Preston (M6 Junc 29)

Tel: 0772 312101

BIRMINGHAM208 Bromford Lane

ErdingtonBirmingham B24 8DL

Tel: 021-327 3273 Fax: 021-322 2011

LONDON

Unit 2

The Royal London Est

29/35 North Acton Road

London NW10

Tel: 081-961 5005


TV WHOLESALE

DSD DISTRIBUTIONSTOCKIST OF BRANDED B. STOCK

Sony, Panasonic, Hitachi, Sanyo, Toshiba etc.

Ex -Rental TV's + VideosBasic TV's from £10

working Video's from £25

Our own Brand 'DUOTRON'Midi + Midi Hi-Fi, CD's, Clock Radios,

Radio Cassettes, Walkmans

Unit 1, Eagle WorksSpringcroft Road, Hall Green

Birmingham B11 2PPTel: 021-778 5825

Mobile: 0860 642972/0850 281640 Fax: 021 778 6013

TELEPLACESTARVIEWNEWEST WHOLESALER

FOR

FST's

BASICS

WORKERS,

THORN

HANDSETS

WE'VE

TELEPHONESTOCK

081-594TOWNGATE

25 THAMES

(OFF A13 -

IN BARKINGQUALITY EX -RENTAL

TVs & VIDEOS

TELETEXT REMOTE

PORTABLES

NON WORKERS

& NON THORNE

AVAILABLE

GOT 'EM ALL

FOR LATESTAVAILABILITY

2980UNIT DBUSINESS CENTREROAD, BARKING

ESSEX IG11 OJPCLOSE TO M25 AND NORTH

CIRCULAR ROAD)

SCOTLANDTV

Refurbished

8,Hillington

041-883

& VIDEO

Working

Delivered.Colquhoun

GlasgowG52

Estate

WHOLESALE.

Faulty

Industrial

1XX

Stock

Park

2610...,68 TELEVISION NOVEMBER 1994

TV WHOLESALE'

CentreVisionCENTREVISION HOUSE SLOPER ROAD LECKWITH

CARDIFF CF1 8AB

FOR QUALITY STOCK

LARGE SELECTION OF REFURBISHEDSTOCK READY FOR DIRECT

RE -SALEComplete with

Instruction Book & Handset

LARGE DISPLAY OFFST, TELETEXT,

FASTEXT, NICAM STEREO

100s OF VCRs NOW IN STOCK

WORKING HI-FI INCLUDING SPEAKERSFROM £20.00

Above price + VAT

PHONE 0222 344754FOR OUR

UNBEATABLE PRICESE1-3 Fax No: 0222 344218

VISA

C.T.V.UNIT 5, THE PHOENIX BUILDING, RUSHOCK

TRADING ESTATE, DROITWICH ROAD,NEAR KIDDERMINSTER

TELEPHONE: 0299-2515220836-585829/0860-8096731(24HR)

SUPPLIERS OF HIGH QUALITY

EX -RENTAL TELEVISIONS AND VIDEOS

LARGE STOCKS ALWAYS AVAILABLE

ALL AT COMPETITIVE PRICES

Also available: `B' Grade Products,

Audio, and Complete Range

of Televisions and Videos

OPEN: MON-FRI - 9.30-5.30

TEL:0299-251522

0836-585829/0860-809673 (124HR)

Fax: 0299-251543 EXPORT ENQUIRIES WELCOME

WILTSGROVE LTD- 28-29 RIVER Si REET, DIGBETH

vaABIRMINGHAM B5 5SA

TEL: 021 772-2733 FAX: 021 766-6100

HIGH QUALITY EX -RENTAL THORN ANDGRANADA STOCK PLUS GRADED STOCK

AUDIO, TVs, VCR etc.RING IN FOR PRICES

FREE DELIVERY FOR MOST AREAS OF UK

NOW AVAILABLEGRADED STOCK - MAJOR BRAND

Complete with original boxed, handset andinstruction book - Good as newLatest Nicam, Fastext, Prologic

ALMOST HALF PRICE OF RETAIL

*** STAR BUY ***FERGUSON 59L5 SPEAKERS (with stands) £14.95 per pair

-NEW 1 ' =itton BRAND

PORTABLE 14' REMOTE TVON SCREEN DISPLAY, SPECIALVHF/UHF TUNER, PRICE

12 MONTHS (Parts) GUARANTEE etc£99.95

*GUARANTEED LOWEST TRICE*1,000s of TV & Video Spares also available --

EXPORT ENQUIRIESW ELCOME1/./. S/0(4) Si B.//17 /0 II V/ Ill//.IT), 1 IT& ( IRRI Ild.

1

VIDEO

VISION CARERECONDITIONED WORKING STOCK

Top Loading VCR £35.60

Front Loaders with Ft/C. £45.90Twin Speed VCR with R/C £55.00

Ferguson FV1 1 R/3V55 £65.00

T.V.

TELEVISIONBasic CTVs from £15.00Remote CTVs from £25.00Teletext CTVs from £35.00FSTs from £65.00

"B" GRADE WORKING STOCK

20" Remote £125.00

20" Nicam Fast Text £159.00

21" Nicam Fast Text £1791)0

14" Teletext £109.00

Now AvailableGraded StockMajor Brand

Latest Nicam,Fastext, Prologic

NEW 14 Remote Control) Portal* CTV 12 months (Parts) Guarantee £99.95

E180 EXTRA GRADE VIDEO TAPE (min 50) f 0.79

Self adhesive black ash vinyl 15m x 450mm for TV cabinets etc £14.50

Branded 'B' grade now availableSHARP, GOLDSTAR, HITACHI, AKURA, TOSHIBA, etc

** CAMCORDERS NOW AVAILABLE **

40 Invincible Road, Farnborough,Hampshire GU14 7QU

(Ex Teleprice Unit)Tel: 0252-512161 Fax: 0252-524388

Please note new address:Unit 21, Deacon Way, Reading, BerkshireOPEN MONDAY TO FRIDAY gam-5.30pm

EXPORT ENQUIRIES WELCOMEWe will be moving to the new premises - please ring

All stock subject to availability, VAT & carriage


TV WHOLESALE

TELEPRICELIMITED

Leaders in the supply of:Ex -rental, End -of -line, Customer returns and Surplus stocks of

Televisions, Video and Audio Equipment, andDomestic Washing Machines, Dryers, Refrigerators, etc.

to the TradeContact your nearest Area Manager for latest prices:

Area Contact: Telephone No: Facsimile No:

South East Colin Gordon 0374 738701 0227 741312South West Tony Lewis 0374 732784 0291 425018

North Ian McClelland 0831 597331 0244 400602Northern Ireland Graham Jess 0232 779818 0232 779745

Head Office: Baird House, Arlington Business Park, Theale, Reading, Berks RG7 4SA. Tel: 0734 309933 Fax: 0734 309934

AERIALSFOR TV & FM RADIO, PLUS

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CLASSIFIED CLASSIFIED CLASSIFIED

'EN_EilE CLASSIFIEDNo other consumer magazine in the country can reach so effectivelythose readers who are wholly engaged in the television and affiliatedelectronic industries. They have a need to know of your products andservices.

The prepaid rate for semi display setting is £12.00 per single column centimetre(minimum 3 cm). Classified advertisements £8.40 per line, box number £22.00 extra.All prices plus 171/2% VAT. All cheques, postal orders etc., to be made payable toReed Business Publishing. Advertisements, together with remittance, should be sent toThe Television Classified, 11th Floor, Quadrant House, The Quadrant, Sutton,Surrey SM2 5AS.

1E11 PHONE 081-652 8339 FAX 081-652 8931 VISA

SERVICE MANUALSFor most U.K. European, Far East & USA makes

Thousands of different models available

Prices (Stock Items):-

VCR, VCP, Camcorder, TVNid - £13.50CTV, Colour Monitor, Camera - £8.50MTV, Mono Monitor, SAT, MWV - £6.00

Add P/P £1.50 for first item then 50pfor each additional item - no VAT

Cheque/PO with order only please.

D-TECPO BOX 1171, FERNDOWN, DORSET BH22 9YG

Tel: 0202 870656

SERVICE MANUALSWe have what is probably the largest range of

Service Information available anywhere.From the Earliest Valve Wireless to the Latest

Video Recorders. Colour Televisions, TestGear, Audio, Computers, Amateur Radio, in

fact practically anything.Originals or Photostats as available.

Also available. Our FREE cataloguedetailing Hundreds of Technical Books0,'and Repair Guides available.

SONow Available. Our Service Manuals Index on P.C. Disc 13.5"I for use on yourComputer. lust £3.50 with FREE everlasting Updates. Order MP -285.

Mauritron Technical Services (5TV),8 Cherry Tree Road, Chinnor, Oxon OX9 4QY

Tel: 0844 351694 Fax: 0844 352554.Please forward your latest catalogue for which I enclose 2 x I st Class Stamps. or

£3.50 for the Technical Books Catalogue plus Manuals Index on PC Discls)

NAME

Address

POSTCODF

FIX IT KWIK!!!After many requests for further servicing informationE.C.S. has now produced the KWIK TIPS range oftechnical publications for the TV & video engineer.

KWIK TIPS TELEVISION covering a broad range ofmakes, models & chassis & containing a uniquecollection of over 2500 television fault solutions.ISBN 1 898394 00 8 First edition now available- only £13.95

KWIK TIPS VIDEO is ideal for dealing with those video"nasties", a superb collection of over 2000 video faultsfrom a wide spectrum izO manufacturers.ISBN 1 898394 01 6 First edition now available - only £10.95

Chassis & equivalent identification made easy with theE.C.S. Television & video equivalents, TV model tochassis guide & camcorder equivalents A massive 4500entries brought together in 1 book.ISBN 1 898394 02 4 First edition now available - only £4.95

Now in their 12th Edition with thousands of copies soldworldwide the E.C.S. Television, Video, CD satellite &camcorder indexes contain over 9200 references listedin 12 years of television magazine.Price per full set (indexes I sted above) - only £14.75

E.C.S.Technical publishing

31 PRENTON ROAD WEST,PRENTON, BIRKENHEAD,MERSEYSIDE L42 9PY

Please add £1.75 p&p to total (europe £2.75, r.o.w please enquire).

FA ST FIX451 VI* WV 111

containing over 150 pagesAre you making lull use of the wealth of fault fir dingand technical information available to you in yourback copies of Television' But how do I located allyou may ask? Simple, let the FAST FIX FAUI:INDEX find a for you. Containing approximatey8000 fault symptoms and also indexing hundreds oftechnical references. FAST FIX could pay for itselfatter lust one repair. References are arrangedalphabetically listing make, model, fault symptomand page retirence and cover the years 1982 1993inclusive. Regular updating takes place and al,customers will be notified.

Complete FAST FIX index £16.00 inclusive.Overseas cyders please add £3.00

MONEY BACK GUARANTEE IF YOU ARE POTCOMPLETELY SATISFIEDSend Checoes/Postal Orders, payable to.J Humphreys, 13 Mansfield Avenue, St. Johns ParkHawarden, Clwyd CH5 3S8 N. WalesFor further details, tel.' 0244 5329E1

11 /111.WO/S 1FEILITIA11-111:1' CI IDES & SERI ICE tillErl'S

FRYERNSHurt

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pricy ill 1..,3 50

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SERVICE MANUALSHave you turned work away for want of a Service Manual'Have you ever bought a Service Manual and never use it morethan once,Then why not loin

"THE MANUALS LIBRARY"For details and Membership Application F01117

Write. Phone or Fax

HARVEY ELECTRONICS43 Loop Road, Beachley, Chepstow, Gwent_ NP6 7HE

Tel 0291-623086 Fan: 0291-628786VISA. ACCESS accepted


CLASSIFIED CLASSIFIED CLASSIFIED CLASSIFIED CLASSIFIED

SERVICE%-z,zoMANUALS'

We Have the worlds Largest Selection of Manuals

SELECTED TITLESSo many titles, it's criminal!

VCR/CAMERA EQUIV'S & CHASSISChassis & Equivalents Guide £4.00CTV/SATELLITE EQUIV'S & CHASSISChassis & Equivalents Guide £4.00DATA REF GUIDE 5th Edn.Contains all the above plus Audio, Mono TV,Test Equip, CD's etc.. £9.95CTV SERVICING BY KINGG.King's 2nd Edn. Trade Standard £16.95*NEW*SERVICING CD PLAYERSProblem solving bench companion £75.00BUY/SELL & SERVICING USEDTV's, VCR's OR CD'S (Pocket Books) f9.95 each

CTV CIRCUIT COLLECTIONSAlba/Bush £29 Ans'd/Fid'ity £25 B&O £25Decca £29 GEC Grundig £45Hitachi £55 ITT/Nokia £45 Matsui £45Mitsubishi f45 Pba7ips 189 Rediffusion £25Sanyo £35 Sony £74 Toshiba £43

SEE CATALOGUE FOR FULL LIST

DATA LIBRARYHOW IT WORKS IN 3 EASY STEPS

STEP 1: You pay a joining fee of £69.95 (the annual

renewal charge is £25), & tell us what service manual

you want We'll send it to you, usually by return.

STEP 2 When you want another manual, just return

your current one with £4.95, for exchange & handling,

and VI us what manual you want in exchange.

STEP 3: Repeat 'Step 2' as often as required!

Your joining fee of £69.95 also inciudes:-

Your First 12 Months MembershipTechnical Help Line

;:{47 All STREE NewslettersData Reference Guide

We also offer any 20 manuals for £190Order them as required, there is no

time -limit & postage is includedThis offer is open to non -Library members

*NEW*EUROPEAN SCRAMBLINGSYSTEMS 4th Edn. £32.00John McCormac's latest update of his bestselling book, showing how to beatthe Videocrypt and build es)your own decoder! >-PRACT' 1'V REPAIRS 2nd Edn. £16.95Update of worlds most successful general repairguide. Now includes Nicam & Fastext.*NEW*SOFTWARE ENGINEERS P/BSystem development, maintenance & repair arefully explained in depth £12.95

I ABOUT T1S & INFOTECH

We started out as 'Ause-Enterprtses' in

1971 as a partnership between several

Electronic Witters and an independentPubishing Co..

In 1980 we bought -out STREE (Society

for Television, Radlo and Electronic Engineers)

and a Electrical Manual Suppler. We havesire grown into, not only, the largest supplier

of Service Manuakkircuils, Repair data &Technical books, but non run a Service Manual

Lbrary and wen a PC Games Library.

TECHNICAL BOOKSA selection from our range of books for the repair trade

TELEVISION CHASSIS GUIDEFull cross reference for all models.

Order MP -18. sawTELEVISION EQUIVALENTS

Lists models which are the same.Order MP -150. £600

FAULT LISTS FOR TELEVISIONSHundreds of operatic faults for dozens of

different makes and models.Order MP -205. £7.00

TELETEXT REPAIR MANUALCovers SAA range of boards.

Order MP -38. £7.00TELEVISION REMOTE CONTROL

CIRCUITSDozens of Diagrams on many remotes.

Order MP -I67. £10.00TV POWER SUPPLY CIRCUITSDozens of P.S. circuit stages.

Order MP -219. £10 00SCART EUROCONNECTOR SYSTEMComprehensive details of the system.

Order MP -2I. 4500P.C. HARD DISC DRIVEREFERENCE MANUAL

Comprehensive Drive Details.Order MP -84. 55.00

P.C. DIAGNOSTICS SOFTWAREDozens of programs to aid you in

diagnostics of PC's and Drives etc.2 sets of 7 x 3.6" Discs per set.

Set I. Order MP -250. 612.50Set 2. Order MP -251. 612.50VIDEO RECORDER AND

CAMCORDER EQUIVALENTSFull Cross-reference guides.

Makes A-.1 Order MP -218. 56.00Makes K -Z Order MP -219. £6.00FAULT LISTINGS FOR VIDEO

Lists Hundreds of Faults for dozens ofmakes and models.

Volume I. MP -206. 67.00Volume 2. MP -228. £7.00

VHS VIDEO RECORDER PRINCIPLESDetailed guide on how it works.

Order MP -58. 54.00VIDEO TEST SIG

Special cassette lets you operate themachine in test mode.

Order VEL £15.00VIDEO HEAD CLEANING KIT

Special kit with comprehensiveinstructions on how to service heads.

Order WICK 55.00VIDEO RECORDER FAULTS

Unique repair guide for beginnersOrder MP -5. saw

WIRE ANTENNAS FORH.F. OPERATORS

THE Aerial book for Amateurs.Order MP -248. 45.95

REEL TO REEL TAPERECORDER SERVICING

Theory and circuits for repairs.Order MP -20I. £4.95

TRANSISTOR RADIO REPAIR GUIDEComprehensive servicing charts.

Order MP -7. £1.95'RECORDER PLAYER SPEED DISCGet your phonograph up to speed.

Order MP -8. £0.95SWITCH MODE POWER SUPPLY

I.C. TYPE TDA-4600Circuitry and operation explained.

Order MP -37. £6.00VOLTAGE REGULATORS. STABILISERS

& POWER SUPPLIESIdentification and specifications.

Order MP -9. 6600CMOS DATABOOK

Pinouts and circuits for 4000 series.Order MP -I0. 55.00

TTL DATABOOKPinouta and circuits for 7400 series.

Order MP -94 56.00TRANSISTOR EQUIVALENTS

Includes details on testing them.Order MP -24.58.00

OFFICE EQUIPMENT EQUIVALENTSPhotocopiers & Fax machine. covered.

Order MP -200. £6.00TELEPHONE CODE LOCATION GUIDEFind the Town from the Phone Code.

Order MP -19. 64.00MANUFACTURERS EQUIVALENTS

What makes are the same.Order MP -220. 53.00

The above selection arejust a few of theHundreds of UniqueRepair and Data Guidesshown in our FREEcatalogue - Yonrs for theasking. Sera FREE withall orders or send 2 3,C lstclass stamps for yourcopy TODAY!

Order TODAY using Access/Visa for immediate despatch.All order plus £2.94 Post and Packing. (Overseas £5.00)

MAURITRON TECHNICAL SERVICES (6TVI)8 Cherry Tree Road, Chinnor, Oxfordshire 0X9 4QY

Tel: 0844-351694. Fax: 0844-352554

AMSTRAD, LOGIK,MATSUI-SAISHOFAULT FINDING GUIDE

Covers hundreds of faults on a wide range of televisionand video recorders. Professionally compiled in easy tolocate format. SAVES TIME AND MONEY by pin

pointing faults in record time.

Due to massive over print, we are able to offer this guide ata reduced rate of£5.50 Inc. p&p.

TOR. ROWLAND

438 Poynters Rd, Luton, Beds. LU4 OTW

1111119._

'MBES

REBUILT CRTsVDU - MONITOR TV

Image Burn -In Removed From Screen Phosphors

N.G.T. ELECTRONICS LTDUnit 116, 62 Tritton Road, London SE21 8DE

PHONE: 081-766 0114Britain's Oldest Established Tube Rebuilder


NEWEDITION

**********N*****

TELEVISION SERVICING 1993-94 E89.00INCLUDES FREE CIRCUIT

DIAGRAM INDEX GUIDE 1987-94 Covers 629 Models From 41 Manufacturers. ISBN 1 898598 03 7

AIKOCT 2210

AIWAVXT 1010K

ALBA3114 ATCTV 100CTV 600

DAEWOODTD 2158DID 2159DTD2169DTG 2596DTG 2597DTG 2993OTG 2997

FINLUX5121 S5125 C5125E5125 M5125 S5128 C5128E5128 M

rTT/NOKIACigMsion 7291Cigivision 8281Cigivision 8291Digiwision 9291

.14CC 1441 EKCS 2191 r3KT

NIKKAITLG 2091TLG 20TXTLG 2191TLG 2195TLG 2801NTLG 517

NOKIA

PERDIOCTV 1409RCTV 1410CTV 1477

PHILIPS1444 3324/ZB1444 3527/05B1444 3527/0"B

PHILIPS25ST 1750/25825ST 1761/25828fr 2070/25R28GR 5772/25E3283L 9! /0/05828SL 5770/Z828ST 1770/t5B28ST 1770/Z2

SHARPDV 5 50HDV 51433HDi 5,41.5H

CM 6333H

SONOLOR63 81460171 S4 701

CTV 601 DANSAI LUXOR 1525 14GR 1CC1/0.513 SONYCTV 700 1406 5128 N

180 5519 1530 14GR 1220/0E3 28ST 1781/MBKV-F2531 B

CTV 7004 1409 R 5128 S180 552225 1725 14GR 1M14:513 3300' 2030/258

KV-E-.11 DCTV 701 1415 R GOLDSTAR 180552625 1730 14GR 1221/1W SALORA Kv-Fn9.1.9 u

CTV 702 FERGUSON CBT 4172 180 631425 2125 14GR 12'7/(58 15 S 2C KV-P2533 E

CTV 710 A 10 9 CBT 9172 180 6326 25 2130 14GR 1227/C5W 17 S X KV-P2331 BCTV 748 A 14 R CIT 2588 130 632E 29 4032 14GR 12,9)1358 21 N 6 KV-F 2931 0CTV 840 A 51 N Cfr 4172 180 7014 25 4532 14GR la,905 21 N6 F KV-F 7.1.12 U

CTV 841 A 50 F CIT 4175 18C fuze 25 %V 14PT 1214/Z 21 N 81 K5/ -E2933 E

CTV 842 A 68 N 1 545 180 ,u /b 29 5573 14PT 1214.4ZW 21 S 41 KV-E3431 BCTV 843 B 14 C 755 545 7018 6.11.2 1417 121N10 21. S 4S KV-E3431 DVTV 10 B 14 R T 63 530 DS 7128 6342 14FT 1351/07 21 S 5C Kv_E14.3.3 E

VTV 14 B 39 F T 63 530 FT/GB 88 6364 1417 1354K 1 21 S 5U KV-1.41120

AMSTRAD B 49 F GRUNDIG 64435 6374 14FT1554/001 . 25 E 7S KJ-0.41410U

STV 20 B 51 NX 763 530 Text 9128 7142 14FT 155AM 25 E 9S KV-I.A1411 U.

BUSH B 59 FB 59 N

770 540 DST 70 540 DS/TF

MATSUI 71647173

14Fr 1554/061417 1 %NV

25 M 9C25 N 6

KV-M1420 Lu

14021452 T

B 59 NXB E8 N -

T 70 540 FT/GBT 70 540 Text

1091KV-MI42014M1424

71747291

14FT 155N'314Fr 3034,103

25 N i3F25 N EC

KV.A1421UKV-M1620 L

20012032

B 68 NXC 14 C

T 70 540 Text/GBWien ST 1663

1436829'9291

14Pr 300442114F7 3034/07

25 N 8S25 S 4S

KV-M1620 UKV-M1621 U

2004 C 39 F Wien Sr 1663/814361476

CT 5532 UK 1544 3232/056 25 S 55 KV-M1921 U2009202972052

C 51 FC 51 MT6C 51 ND

Wen ST 663 NCWen Sr 6637CPHINARI

148214922274 R

FX '532 UKFX F332 UKSFNI 5553 JK

1544 3537/07615F7 1E1AiD51744 334F-,-T/E.

28 E 7S28 E 9S28 F 8

KV-M2140 LKV-M2140 UKV 11/4/12141 L

2052 T2057 NTX

C 51 TC 59 NX

HT 14 FC .2C76 RSFN7162UK .

OCEANIC17Fr 1614.0520GR 1 Zat7B

28 M 9028 N 8C

KVM2141UKV,M2150 L

2059 C 68 NXHIT 140 RC 2086 T

153) 20GR IZT.4.08B 28 N 8S KV M2150 U2101 D 14 R

HIT 14RHIT 201T

20927209 R 1730 20GR 1251211513 28 S 4C KV M2151 L

2102 FD1410 VTV 10 209 T 2130 20GR 1252432B 28 S 45 K1 -M2151 U2105 S 49 F 3723 2017 135NO3 32 F8 KV-52911 B2152 VTV 14 2'99 N 20FT 135N01 33 E 9S21527 FINLUX HITACHI MITSUBISHI 4032

20FT1354'42 33 M 9CK4-57911 D

2155 T 2112 F 021 1919 CT 14.11 BM4532

2OPT 1'50A.03 36 F 8KV-B2912 UK1, E

2157 NTX 2117 A

2159 NTX 212D S021 197C21 64TN

CT 144.11 EMCT 14/01 EMC1)

55536323 20F'T 1336,01

20FT 150249SAMSUNG

i-S291310.-X2160 B

2214 A 2122 S 021 1819 CT 1525 LTX6342

23Pr 1504/13CI 3.-152

11VK1./X2161 A

B2420 2126 C

2127 CC25 09RC25 09T

CT 1525 TXCT 15M2 TX

63647123 20Pr 1504./16

20F7 1504/42

CI KrCI 5,15.2 X

KV-X2161KV-X2161 D

2621 2134 S2138 S

C25 249 CT 21A2 LST7164

ORION 2144 335(../053a 5052 XTCI 5033 AN

KV-X2161 EKT -X2161 K

2860 NIX2510 K

C25 2472 CT 2I42 STX20 VR

214A .S.351053 CI 5330 AN 10T -X2162 U3114 A

2512 FC25 3274 Cr 21A3 SD(

OSAKI214.4 3.../07B a 6233TASHIKO

3114 AT2514E

CZ 44TN CT 2145 LST 21Pr 131/05 C16229 T 1314 GF'33114 72517E

C25 58T CT 2145 S1)( 3114AT 21PT 1318/35 CI 6230 WN D14 GP43214 S C25 587N CT 21M2 BM/TX P 140 21PT -.34B/OC a 7230 WN -ATUNG33145 2522 S C25 627N CT 21M3TX OSUME 21FT 1341301BT 14 2524 S C25 647N CT 2542 LST CTV 1494 R 21PT 1348/42 SANYO B SeriesCTV 100 2526 C C25 68Th CT 2542 STX PANASONIC 21PT161A/0.5

CBP 2163 C Series

DAEWOO 253) K2534 S

C2B 32TA CT 2543 SD(TX 7,A2 21FT 1613iO3

C13P 2183CEP 2573

TOSHIBADMO 1454DM() 2164

2538 S2810 K

C29 44TNC29 58T

CT 25A4 LSTCT 2544 STX

TX 2542XTX 2543

21PT 16", 3/0521PT 164402 CBE' 2873

CBP 331DN

1510 RBT1510 TETT

DMQ 2193DMQ 2553DMQ 259DMA 2997

2812E2817 E2822 S2826 C

C2B 621NC25 64TNC2E158ThC29 68Th

CT 2545 STXCT 2546 STXCT 2%42 TXCT 2583 urx

TX 25G1TX 25W3TX 25X1TX 2942

21PT 164410521PT 164B/0)21PT 1643/0121PT 164B/07

SCHAUBLORENZ5514

156 REIBT1E6 F4313W

1561987156 196W

DTD 142"DTD 145 ,1PT2TXX28834

S

K ITT NOKIACT 5511

CT 2944 STXCT 29A6 STX

Ti?(04.2x29G 1

21FT 164911316413/13W

71288e28

'720 RB1721 TB

DID 145' CT6311 NEI TX 28W3 21FT 164E3/4z 9128 :112D13TDTD I433

2838 S5021 FI2 FX 5511 2591 FTXN TX 28X1 21PT 1654/03 SHARP Z12 DST

DTD 2027 5325 617CVFX 6311 NIKKAI TX 2943 21ST 1730/Z8 3702H M27 DETTDTD 2043DTD 2047DTD 2051DTD 209'

5025 FI25026 KIO5028 El?5029 F12

Digivision 6362Digivision 6381DigMsion 6382E3Digivision 7162

NT21TLG 1409116 1432TLG 1449

TX 29W3

PERDIOCF 2113CT 2011

25GP. 5733/ZB25GR 57 WI ZB25GR 5 4/052581_57E:0/C5E

CV 3730CV 3745HDV 374-1DV 375' H

n312 DBT19 SST

3327 DBT

IISTARDTD 20. 5029 K10 Digivision 7171 TLG 1447 25SL 57i)/5E' DV 510- H ./13 71 PSDID 2147DTD 2145DID 2157

5121 A5121 C5121 N

DigMsion 7181Digivision 7182

TLG 1447TTLG au)TLG 2093

CT 2912CT2I12CTV 1408CTV 1409

25SL 1724/05625ST 17?4/ZE125ST 1750/95B

DV 5103HDV 5105F10V5131H

Satellite Servicing 1987-90 £59.00Covers 127 Models. ISBN: 0 9513897 6 9

Satellite Servicing 1991-92 £69.00Covers 251 Models. ISBN: 3 9513897 8 5

Television Servicing 1987-90 £59.00Reprint Avai able. ISBN: 0 5913897 0 X

Television Servicing 1989-90 £69.00Covers 461 Models. ISBN: 0 951 3897 1 8

Television Servicing 1991-92 £89.00Covers 247 Mcdelt. ISBN: 0 9513897 7 7

Video Servicing 1989-90 SPECIAL OFFER WHILE STOCKS LAST .... £99.00Covers 247 Models. ISBN: 1 898598 04 5

Video Servicing 1991-92 £195.00Three Volume Set Covers 322 Models. ISBN: 0 9513897 9 3

All Pr ces Include UK Post,Packing & Insurance.

Interest FreeCredit

ON PURCHASES OVER £150 (FROM£30 PER MONTH), PLEASE RING.

ALL BOOKS CONTAINCircuit Diagrams: Scope Readings: Voltage

Tables:Essential Part Nos: Alignments &Adjustments: Trouble Shooting Guides

U -VIEW4 South Parade, Bawtry, Doncaster,

Yorkshire, England. DN10 6JHTel: 01302 719997 Fax: 01302 719995


MISCELLANEOUS

JOULE A-400ADVANCED CAR RADIO DECODER/RE-PROGRAMMER

Features:Plugs directly into your IBM or compatible computer. Remove the baseplate from the radio, place the probe onto the PCB and the

security code is instantly displayed. Changing the code or even fully re -programming is just as easy.

ABSOLUTELY NO MODIFICATIONS TO YOUR COMPUTER ARE REQUIREDThe A-400 can use either Comms 1 or Comms 2, connected via the serial lead supplied.

Two levels of password protection (user selectable) to prevent unauthorised use.Each decode is recorded and may be accessed at any time, again, to prevent unauthorised use.

Operates from 12 volts, either from mains (via any mains adapter) for bench use or, via vehicle cigarette lighter socket, for on site use.Easy to use software includes on -screen PCB layouts for probe location, very detailed help screens and information on how to enter

codes into the radio once the set has been decoded.Supplied complete with connecting lead, purpose designed probes and a comprehensive instruction manual.

Technical help line available to all registered users.We will supply a starter kit, ready for use, that will decode most Philips, Ford, Blaupunkt, JVC, Hitachi, Volvo and Toyota

radios for £375.00 + VAT.We also write software to decode the more sophisticated RDS models and can supply at very competitive prices.

Currently the A-400 can decode most makes of radio, covering 166 models with more being added weekly.PHONE NOW FOR OUR FREE DEMONSTRATION DISK AND INFORMATION PACK, OR WHY NOT VISIT US

AT OUR BRAND NEW 4000 sq. ft. FACTORY

ELECTRONIC SOUND SYSTEMSHilton Road, Aycliffe Industrial Estate, Newton Aycliffe, Co. Durham DL5 6EN.

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Microwave OvenComponent Parts

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AWI Ltd, 29 Mariners View, Dodnor Ind Estate,Newport, Isle of Wight, P030 5FA

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------ TRANSFORMERS

TV LINE OUTPUT TRANSFORMERSPHONE 081-948 3702 FAX: 081-332 0583

ALBA AMSTRAD BUSH DECCA DORIC' BLAUPUNKT FERGUSON FIDELITY GEC GRUNDIG GRANADAHITACHI HINARI INDESIT - ITT KIMARA NIKKAI MATSUI MURPHY OSAKI NORDMENDE LOEWE-OPTA PANASONIC PYE PHILIPS SANYO SAISHO SHARPSONY SOLOVOX - SUSUMU TANDBERG - TELEFUNKEN THORN . TRIUMPH THOMSON GOLDSTAR BINATONE

FULL RANGE OF KONIG: VIDEO HEADS, BELT KITS,IDLERS, PINCH ROLLERS, TENSION BANDS.

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This package is fully upgradeable to any model of radio currently on our radio decoding list. Please phone for comprehensiveradio decoding list and free demonstration disc 131/21

Upgrades will even cover the latest radio's on the market. We can supply/design a package to decode any radio that you choose.Updated software available absolutely free.

Package comprises models including:-Ford, Philips, Blaupunkt, Clarion, Pioneer, Panasonic, Grundig, Hitachi, Volvo,J.V.C. In fact over 50 models covered including Ford RDS V1 & V2, GrundigSC303Interface & all necessary probes for connection to the radios are alsosupplied. Installed in seconds, no modification to your computer required.Features:-Fully IBM or compatible, to run on all computers including lap tops, notebooks and even palm tops. Requires graphics capability for P.C.B. layouts.Runs from parallel port of LPT1.

1. Full user friendly menu's2. Help screens with P.C.B. layouts for exact positioning of probes3. Help screens to show you exactly how to enter the codes after decoding

the radio4. Error messages to advise possible fault occurrences (e.g. incorrectly fitted

probe)5. Adjustable for either b&w or colour monitors (Useful for notebooks,

laptops etc.)

6. Fully reprograms blank or corrupted eeproms (using internal database)7. Customised with your company details8. Security coded with your choice of code to stop unauthorised access9. Runs from C drive

10. Keeps a record of all codes (date, time, make, model)11. Fully upgradeableUpgrades:- Check this out?Memphis SQR 88, CDP09, Bremen, Atlanta, Montreux, Symphony, Koln,Philadelphia, Toronto, Montreal, Paris, Peugeot PF3, Vauxhall CD300, SC202,Berlin, Frankfurt, Barcelona, Stockholm, Kingston, Nashville, Woodstock, andmany many more. POA.RADIO DECODING SERVICE:-WE COVER ALL MODELS STARTING FROM £10.00 + CARRIAGE (£4.20 EACHWAY) + VAT. That's only f16.69 or £21.62. If we arrange collection, all youhave to do is make sure its ooxed and adequately protected.Eeprom re -programming service:-All eeproms are decoded for as little as £5.00 including VAT.Please send all eeproms in a padded envelope, to stop damage.

CDH ELECTRONICS, leading the way - not following3 Common Walk, Huntington, Cannock, Staffs. WS12 4NB

Tel: 0543 572 523 VAT Reg No 636 876 011


I CLASSIFIED CLASSIFIED CLASSIFIED CLASSIFIED CLASSIFIED

There'snothinginventedaboutour

quality

PHILIPS

ink ustomer Satisfaction - it's one of the reasons why Philips is aleader in the electronic consumer goods field. It's also the

reason we have now set up a Competence Centre in Minworth, toprovide a high level of technical advice, repair and inspection forcustomers across the UK.It's an initiative which requires quality -orientated staff at everylevel. Right now, exceptional opportunities exist in the followingareas for people whose commitment to excellent customer servicesmirrors our own.

Technical Advice/Bench Engineers.We require ONC or HNC -qualified Electronics Engineers to providetechnical advice to our trade customers over the telephone, and alsoto carry out repair of returned audio and video products. This requiresa high degree of technical competence in audio/video technology plusexcellent telephone skills.

Training Instructor.We are also seeking an ONC or HNC -qualified Electronic Engineer totrain our dealers in new and complex audio and video technologies.In addition to advanced communication and presentation skills and ahigh degree of enthusiasm, you should also be available for regularvisits to our European manufacturing units.

All positions carry competitive salaries, with benefits including25 days' holiday, contributory pension scheme and staff shopdiscount. So if you have the skills and qualities thatour reputationdemands and our customers deserve, please send your CV toPaul Mitchell, Personnel Manager, Philips Consumer Electronics,The Philips Centre, 420-430 London Road, Croydon CR9 3QR.

CAMCORDER ENGINEEROur Company is a major link in the Sony Service Network, and is at the forefront ofmodem technology including surface mount devices, providing support to Sony dealersand consumers. Our range of products is exclusively Sony and covers the range:-

* Walkmans * Video* Audio Systems * Camcorders* Colour T.V. * Cellular Telephone

We are seeking Engineering Technicians who have City & Guilds 224 in Radio and TVServicing and at least five years' experience of the domestic electronic repair industry.Previous experience of Sony products would be an advantage particularly inCamcorders, although training will be given by Sony United Kingdom Ltd, supple-mented by "hands on" training at S.E.S. (Oldbury) Limited.A negotiable salary including 32 days holiday (inclusive of bank holidays) and acontributory pension scheme form part of the remuneration.All applications complete with C.V. should be made in writing to: -

Workshop Controller, S.E.S. (Oldbury) Ltd.P.O. Box 37, Oldbury, West Midlands B69 4NA

We thank all applicants in advance as replying to all who respond may be impractical

TEST EQUIPMENT

',V MEDI AT 2 BIVIII 95 BIVIR7110AT 2, Audi-Multi-Te-stet, 16 test -circuitsfor loudspeakers, tu-ners, amplifiers, head-phones, tape recor-ders, mikes, boosters.

-

BMR95

BMR700

.__/....M.._ " 0 -" "s;t..., ..,,-,J. --.- 14;...

Regenerating Computers & Measurers forCRT's with cathode protection, gas clean-upaid, short repair; exhausted CRT's becomesbright and sharp again even if all other machi-nes do not succeed.

_A-.

car radios, CD -play-ers; measurment 0millivolt, drift, watt,performance; with ge-nerator, radio, signaltracer/injector, 13 voltsupply etc.

United Kingdom: P & E Services, Llandudno, Tel.(0492) 549246, Fax 547880.Ireland: !Milberg Electronics, Ranafast, Co. Donegal.Tel: 353 75 48275 and 48532. Fax: 353 75 71031.New Zealand: TOON Ltd., Onehunga, Auckland. Tel. 668-9 07, Fax 668-4 99.Germany: Ulrich Mater, Oer-Erkenschwick, Fax (0 2368) 5 70 17.

VARIOUS LOCATIONS

c.E15,800 - 19,000 + CAR

BROWN GOODSENGINEERS

SUPERVISORY IN-STORE

Currys Superstores are proof of our determination to pioneerimproved standards in retailing through the delivery of increasedlevels of customer care. As the service organisation of Currys andDixons, and with workshops situated in-store, Mastercare is essential

to the delivery of these high standards. We now want to hear fromexperienced brown goods engineers at all levels - from Engineersthrough to Supervisors - seeking to develop secure careers.

You will benefit from formal training programmes, on -going personaldevelopment schemes and clearly defined, structured career paths. Inaddition we offer an excellent working environment with the latestdiagnostic equipment, first class benefits and a range of remunerationpackages geared to maximising your earnings potential whateveryour levels of experience. Opportunities exist at a variety oflocations - however, we are particularly keen to talk to peopleinterested in working in Berks, Bucks, Oxon, Herts or Hants.

To find out more, please telephone Margaret Thomson, RecruitmentCoordinator, on (0506) 412235 or write to her at MastercareLimited, 6 Lindsey Square, Deans South West Industrial Estate,Livingston EH54 8RL

Currys DixonsMASTERCARE Service



allimm"....mm' FOR SALE gimilmffilmffml

TV & VIDEO RENTALMassive Stocks of

Graded TV's, Video's& Hi-Fi's direct fromthe manufacturers atUnbelievable Prices

MS ProductsTel: 061 773 0085Fax: 061 773 0084

UNIQUE CAR REGISTRATION

NUMBERS FOR SALE

Al T.V.sAll T.V.s

All V.H.S.Best offer in excess of £8,000

secures the set.

Tel: Mike 0642 2508500831 715423

BUSINESS FOR SALE:

BUSINESS FOR SALE

NORTHANTS

Old establishedTVNideo, Electrical retailer,together with good quality

rental business for sale.

Lock up shop, lease durationand rent negotiable.

Genuine reason for sale.

All replies will be treated instrictest confidence.

Reply Box No A5571

BUSINESS FOR SALEWell established, lock up shop +

4 bedrooms, living accommodation.

T.V. Video and Satellite repairs/sales +T.V. and video rental + video library

11800 members). Low rent, profit£30K P.A. Owner emigrating.

Ring Redditch 0532 63529

20" NICAM COLOUR TVS

On Screen Display £32990 Channels + VATVHF, UHF Hyperband tuner

Pa113.G.I. or NTSC

Scart and Sleep TimerALSO 21" and other sizes

18 month mfr warranty

DIMO & COTEL: 44-81-452 4541FAX: 44-81-288 0313

TRADE ONLY

SOFTWARE

RELAYowifk) COMPUTER SOFTWARE

DO YOU RENT TELEVISIONS?DO YOU STILL USE A CARD SYSTEM?DO YOU FIND IT DIFFICULT TO KNOW YOUR ARREARS TOTAL AT ANY GIVEN TIME?If you do then we recommend our computer TV and Video Rental package. Thispackage includes* automatic updating of each customer's record* alphabetical print-out of each customer's arrears and payments missed* total arrears immediately available* easy to use and operate.

NEW NIKE PURCHASE PROGRAMME NOW AVAILABLE AS WELL.These programmes operate on all IBM compatibles running under MS-DOS. Free demonstrationdiscs available.

WANTED.. CONTACT

VALVESWANTED

£30 paid for KT66, KT88, PX4, PX25.£10.00 paid for EL34/EL37.

£75.00 paid for DA100. £3.00 paidfor EC81/CV4024, CV4003, ECC83.They MUST be Mullard/GEC WestEuropean manufacture to achieve

the prices mentioned.Ask for full wanted list.

Billington ExportTelephone: 0403 784961.

Fax 0403 783519.

WANTEDEx Rental TV & Videos,

fast collection,fair prices paid.Tel; 0742 312832.

TRAINING

Looking for a home study course, in thefundamentals of electronics? Whether

you area beginner, or an old handrequiring a refresher, the

DIRECT PERSONALLEARNING

course, could be right for you. Contact:K.Sparrow, 11 Claydon Green,

Whitchurch, Bristol, Avon 8514 ONGTelephone: (0275) 835669

LINEAGEAVO MULT1METF.F1 Model 8, £45.00. 500volt megers £30.00. Prices plus VAT andp&p. Send SAE for lists of Surplus Instru-ments & scopes etc. A. C. Electronics, 17Apleton Grove, Leeds LS9 9EN. Tel: 0532496048.CLOSING DOWN sale TVs, Video, Port-ables. Tel: 0272 754 761.

COLLECTOR OF TV , Radio, Audio, Videotest equipment and parts 11940's to1980's). 0993 771373.

UBRARY OF Service manuals, TV, Video,Camcorder & Audio. Over 7,000 manuals -Offers. Tel: 091-252 7778.

VIDEOCRYPT DECODER Service sheetwith smartcard contact details Eurocryptcard interlace £12.00. E.M.O., Ramsbot-tom, Lancs 8L0 9AG. Tel: 0706 823036.

B & K CRT Reactivator required must be inworking order. Tel: 081-590 1821.

OCHRE MILL. Technical Services, GrundigTV spares for most models to 1985, fast,friendly, helpful, sensible prices. Gt LypeFarm, Charlton, Nr. Malmesbury, WiltsS N16 9DR. Tel: 0666 823228.

SERVICE MANUALS video £5.00, CTV£3.00, Audio £2.00, Radio £1.00, Servicesheets £1.00, Sony, Ferguson etc, manyoriginal and unused, postage extra. Try me0892 654867.

VINTAGE CIRCUITS, manuals & data - forhi-fi military, radio & television up to the1960s. New Address: Savoy Hill Publica-tions, "Seven Ash Cottage", Seven Ash,Combe Martin, North Devon EX43 40PA.Tel: 0271 882665.

WILLIAM J THOMPSONDonaghanie Post OfficeBeragh Co. TyroneTelephone Beragh 58214 (0662 7)

SPARES & COMPS

SURPLUS/REDUNDANT ELECTRONIC

COMPONENTS WANTED

1/Cs - Tuners - Transistors - Valves -

Diodes etc. any quantity considered -

immediate payment.

ADM General TradingTd. 0827 873311. Fax. 0827 874835

RCS VARIABLE VOLTAGE D.C. OW POWS SUPPLY1 to 24 volts yp to 12 amp 1 to 20 volts up lo 1 amp 1 lo 15volts up to 112 amps D C Fully stabilised Twin panel meterslorinLlannatbievoltageo,,

Operatesreading Overload protection

Fully= 24D/ A,C impsiminsue rc5fj;;., 3ins s

poctikac4T

M NO.. Up to 38 volts DC at 6 amp 10 ampspeak Fully variable Twin panel meters Size

141 11 412 C96inc VAT Carr C6

RADIO COMPONENT SPECIALISTS337 VROTENDRSE ROAD, CROYD011SURREY, U.K. Tel: 061 634 1665

Lai. Large SAL Delivery 7 days Callers Welcome Closed Wed

ADVERTISERS' INDEXAerial Techniques 47 Hussein Central TV 67

Alban Electronics Ltd 55 JJ Components 23Anglian TV Wholesale

A -Z Electronics

65

18KG Purchasing 56

Besco Ltd 65Marapet Electronic Components 11

BK Electronics 17MCES 56

Broughfame Ltd 59Muter Elekronische Gerate 75

Bull Electrical 61 Nikko Electronics 58

BW Electronics 63 OZAN 43

Campion Wholesale TV Ltd 70 Philex plc IFCCentral TV Wholesale Distribution P. V. Tubes 11

Ltd

Centervision

Charles Hyde & Son Ltd

63

69

32

Red Bank

Richards, S. Mr.

64

70

Coastal Aerial Supplies 70 Sendz Components IBC & BC

Colour Trade 62 Starview 68

CTV (MIDS) 66 Stewart of Reading 59

CTV (N. E) 69 Superscreen 66

D.S.D. Distribution 68Swift Publications 32

East London Components 12Teleplace 68

Economic Devices 57Teleprice 70

Euras International Ltd 60Tree, W 64

Express TVs 59Turner & Lyons 62

GGL Components

GRANDATA Ltd

11

2-10

TV Live

TV Trade

48

66

Hardy, J.W.18 Vista Electronics 60

Harrison Electronics 58 West Midlands TV & Video 64

Henry's Audio Electronics 56 Willow Vale Electronics Ltd 31

Hockley Discount 63 Wiltsgrove 69

HST Distribution 62 Wizard Distribution 18


MARCONI COMPACT L.N.B. 60cm BACK1.DB £25 MESH DISH10.7 TO 1 1.7GHZ £20, £5 post

SATELLITE RECEIVERS -New Ferguson BSB

Chassis with Tuner, Modulator etc £10

Hand Set £1.50 £4 Post

12v Satellite Receiverwith hand set £30Switched Mode Trans 3112.338. 32642 Ferguson £1Philips switched modetranformers for K40 £5

SAT RECEIVEREARLY BIRD £25

33V33, 3V37 BATTERY £10

Postage £5

TX100 HAND SRT 1785)110

Power Supply 0-15 Volts0-30 Volts 3 Amps with

Meters £34Post £5

S51 hl I SATELLITE: II NERS 1950 to 1750'4101, L.F. frequency 4000MH £9.00 each1 IIF S.BAND TUNER £3.00

11551 MAINS CHASSIS AMSTRAD MONITOR C 10

1 N13 ERSAL TRIPI.ER. NEW TYPE £4.001111:0 LEADS 80p

AMSTRAD Line O.P. Transistors with Diode 2SD/451 11.00VIDEO LAMPS. Long Lead 24pIIITACHI & (TEC FRAME, Thick Film £6.00FIDELITY SPLIT DIODE FCC2215A E 120 FCC20)513E £10 ECC2215BE....£110£30 FRONT PANEL TEL - EX TYPE £5.00NEW (III LINE OP PANEL ' £8.00PHILIPS YEARS AHEADTHE CREDIT CARD CALCULATOR Solar Powered £3.75NEW PHILIPS SBC 1833 Solar & Battery Powered Calculator £8.00THORN PANEL TX9 REC & REMOTE PANELS with Mains Trans 15.00

TXIO REC & REMOTE PANELS with Mains 'I rans £5.00TX100 FRONT PANEL £5.00TX10 TUBE BASE ON PANEL £3.00TX91F £2.00

THORN PANEL No.515-353, 548.02, 565-01, 509/102, 515/173, 508/161 £5.00THORN TX STEREO SOUND O.P. PANEI. (LC. 1 A 7227P) £1.00THORN VIDEO AERIAL AMP 01 M4-597-001 £6.01ULTRASONIC TRANSDUCER 15p

CAMCORDER

SANYONP22

6v 1300mahRechargeableBattery Pack

£6.00

VIDEO AMSTRAD (L,C,D Types) HANDSETS

(HOME MARKET £7.00(EXPORT) £2.50

WILL WORK IN HOME MARKET

6.000 and4.600 4.700 £3

PB500 Panic and ButtonTransmitter 180MHz £1.00GI I CAP 250V, 470M £1.35

LEADSScart to Scart

all pin connected £2.00

SEND FOR DATAD2 MAC

SATELLITERECEIVER

£35(£10 Post)

Nevi I- prom forconverting FergusonBSB Receivers to D2MAC and PAL - 99

channel is tunable andeach one can be putinto memory - also

has menu.£20

PAL panel(to convert to PAL)

£20SEND FOR DATA

TELEPHONEBATTERY SANYO3.6V 250/MA - £2

VARTA 3.5V280 M/A

£3.00

FEEDHORN FOROFFSET ANTENNA

£8.00

HITACHI U/V HANDSET VIDEO £10

SATELLITE UNITVideo Out/Audio Out,

L and R Polariser± 35M/A

and Decoder Socket

£10

Gas Soidering Irons New Type £10.00

Variety Nickel Cadmium Batteries from Telephone Type toSuh-C.50p per cell. Mainly in packs of 6 to 8.

TX100 REMOTE PANELNo.56413IC M293B/and

SAA5012 £10 etc

TX100 REMOTE PANEL IC £10

NICAM UNIT- Ferguson made for ICC5Chassis -home market and export -hascircuit diagram and can be converted to mostsets -£15.TOSHIBA Nicam panel & IF export only hasthe Toshiba chip set £7.00

144M Hz Changed Over RelayAerial 50p

6251 FRAME 0/P THICK FILMHITACHI GEC £9.00

THICK FILMHITACHI HM9205A £4.00

HITACHI UHF -VHF GRF.1 OR BLACK (m04-025101

SMALL TUNER £1.50 SAME MAINS Mains input

ET598A 15.00 LEAD WITH P131;SOCKET FOR TM'

choke forTV) £4

F I 595A £5.00 EQUIPMENT ET(:.

PHILIPS 'NIVERSAL BATTERY TESTER SRC 1695 £3.00

NEW DETECTOR £10.00

PHONE HOME TO( HECK WHETHER YOU HAVE ANIN 'f RUDER

sl ND FOR DATA6.1111 I l 1 I PHONE 120

THORNM49481

on RemotePanel £5

THORN

FRAME IC

TX100 etc

IC TDA 3652

IS OBSOLETE.

REPLACEMENT

TDA 3654 12.06

TX100 SWITCH MODETRANS 5157/480AND 00D4252001

06133082011

TXIO REMOTE PANEL £5

REUCLA1 ED PW R \I -P 50nh1 A 1 5V,12VDC

sw0(691 e &

STEREO SOLAR RADIOVHF AND MW £10.00

LARGE Foacs pots. Fits Pyc, GEC, ITT.Deceit 75p

TX9-TX100 FRONT PANEL £5WITH REMOTE £10

NON REMOTE 8 push button £10

BSB SAT/REC NEW. CHASSIS,TUNER AND MOD £5 + Post £3

PHILIPS NEW TYPEU/V HANDSET £10

GI I LOFT PanelGI I Tip SwitchGI I IF PanelG8 Push Burton Unit(T8 Con: Panel New Back Type

E4.00£20.00£3.00£2.00£4.00

Have you got Acid Rain in your garden)PH METER £5.00

MIXED TOSHIBAHAND SETS

FIVE FOR £12

MADE BY PLESSEY - MADE IN ENGLANDNew public telephone exchange

original price cost £299.00Network exchange line

(at home or in a small business) has two telephonesand cables and NS5l07 control unit

SPECIAL PRICE£40

Send for data

G I 1 470 MFD 250s

£1.35

3V33 HANDSET £10

12 Volt Relays 20pwith D/P changeover

MONO I '0 LEADS3 Metre 30p

I.EAD SCART TOPLUG 50p

Post £5 Actuator Anicnnmotor £1 5.0)

LATEST VIDEOFor 1.:ilest 1001ips. GEC. Pye and Hitachi. /- not panel unh rnemory chip and push button and pot. and 1 .D £6.00 NEW

DECODER C -CAMPHILIPS MADE for K40 CHASSIS

IC No. TDA 3590£5.00

BRIDGES RECTIFIERMixed BR -31 to 34

2 Amp to 5 Amp 8 for £1.00

I METRE SCART LEAD £1.00

FERGUSON YELLOWSPOTTX100

NEW CHASSIS£12 £5 Post

TX100 FRONTPANEL £58 Button

PULSE CAPACITOR 20 for a £1 mixed (1500V to 2KV)

56420A 20A ,600V THYRISTOR £1.75

LNC I 1GHZ NOKIA - ENS FOR OFFSET DISH 113.00

ELECTROMAGNETIC POLARIZER In95 12 75 (AIL 191(1

I IGHZ LOW NOISE 131 OCK DOWN CON VF Rl FR 8CP. '175MADE BY MASPRO 114.01

SAM -VIAL) VIDEO MOTORS £5.00SATELLITE TUNER UNIT 2427611with Base Band, Video Out £8.00

SALORASAT RECEIVER

CONVERSION KITFor

models 24M60, 25M90,28M90, SB1206E. SB1365

£15

ITT BG2032-642A TRIPLER £5.00

ITI/KOKIA HF IF MODULE 24KNo 5828-04-10 £15.00

BURGLAR ALARMUSE INFRA RED DETECTOR

WIDE AND SHORT ANGLEWALL MOUNT ES

WITH RELAY

TUNER UN 616

TERE 7-008A - 115-B-2010ECC-2885PLE TEEF l -030AUHF, VHF TUNER - SMALL TYPE

£4 EACH

TXIO 8 way button unit24v 0 24v 3Amp MAINS TRANSFORMERMSHI FCF09

£8.00£3.00£???

TX90 TO TX1008 BUTTON UNIT £4.00

BRIDGE RECTIFIERS - MIXED 10 FOR £1

POWER SUPPLYKIT 0.28 volts 11/2 amps

with 2 meters £12

Printed circuit hoardand components

TVK 186-5 TRIPLER TVK 76-5£1.50 EACH

MODUI A TOR K11 ... £5SI. to 12v fur all cameras etc

2433752 1202432984243211712432301 El 52435016 I24319522434393 EACH2432211T9048ADST85B243TV/33069DK4LOPTK402433,15224329042434451 £14

SPLIT -DIODE2433752 L15TA100 Green Spot £15.00rx100 Yellow Spot

L.0 P 1 £10.00rxvo White Spot

L.O.P T £15.00Split Diode 110° £12.50Orion 05-3MGEC 95-4793-0DO Thorn 24121111 2 0.5

2434141 LACH2434492 £102414493

DST 51524311134023AD 110.00MSHIEPT131 £12.00MSHIFI1W27 112.00DSTRI6N243 £10.003220029E10310

TOSHIBADST 18661243 ginT413-4023AD £10CP00 Philips SplitDiode £10.002435141 £152432491 E10243500 £1-

36761360812692120;1037051(TK Logi3621233651360723636236482367613683116832

3683336921 796922'9

TX852435701243439324350162435014

£10

24367972434494

£15

TRANSFORMERS243, 111 CIO

24351)12 £10FERGUSON47003481 £10AMSTRAD TVR3LPTS £10TFB3069D EQUTFB4009AN

AT/036/00Al -70091iAT/055AT2117N35AT207N3/1

1

A77076/51V/' 820SE SOO

AT21.06'55AT2076171TRCO ST CT3325012041FRI65KA Orion2076/512432401 2433451

SHARP/11 ( F09

£10EACH

SATELLITE TUNER950MH.-1750M11( £5.00

Trr PA NEI.CM(' 301 MC 113(MC- 402CM(' 115 1 NU 05 ( 51(

BRIDGE RECTIFIERS10 FOR /1.00

4 Amp for Video Power Supply

BURGLARALARM

£2.00with siren9 VOLT

SEL ITT1113254E2 Front Panel

£15.00

DECCA - GEC - ITT6 push button £5.00

25 Way Plugand Socketwith Case

£1.50

TRV3 Amstrad Cassette Mechanisms. New with 2 motors and sound head. £15O. Amstrad Television Tuner UHF. Small, Fits most Amstrads. £6.

PHILIPS HAND SET G11 TEXT ULTRASONIC £10

G11 HAND SET ULTRASONIC £10

PHIUPS RC5 EASY CONTROL £10

111FRA RED DETECTOR

(tor outside use) with TimeControl I Distance Control £12Sensitivity Adjustment Control NighAdjustment Time Delay Adjustment

SENDZ COMPONENTS0702 338894

(To order see back page)

TUNER UNITSSmall V,Cap Mitsumi- UHF £4.00

VHF £3.00Portable & Rotary Tuners Sanyo& Mimumi UHF £5.00Mosf0 1111FN HE ( newtype) £8.00UP 2-B31 Fidelity )//CapT/Unit £6.00UIIF VHF V' Caps onpanel £3.00HITACHI 2(1 Turn Pot 40pU321 ca panel £6.00(UV 615 £10.00U/V ".16 (10.00

FIT MOSTSETS

New Thom0004-235 Hand Set

002-01 Type ofv1£10)

VIDEO MOTOR for VT568 Is pe5'C621108 £8.00

AMP TUNER IF let VT568Hitachi& GEC MOO

U/V 6, DIODETRIPLERS £2.00

FERGUSON SAT

HAND SETSR D1SR D2 £2SR D3SR D4

FERGUSONICC5

STEREOO.P. PANELICs TDA8405

TDA8421TBA 1204 £10

4600 T1) 8600AMSTRAD VIDE()HAND SET WITH

LCD (10

NICAM Mk11 KIT MODULEE20.00 with data

Burglar Alarmi LIS time delay to wt £2

Mains 'Transformer £4.00240v in 1110: to 120v out

I amp post £3

FERGUSON CHASSISNew

TX 100

TX80TX 89TX 99TX 98 VHF/UHFTX 90 Push Button Chassis 14"TX 90 20" chassis

TX 10 Metal ChassisPP on each chassis £5.00

£15.00

£15.00

£15.00

£30.00£20.00£15.00£15.00£15.00

Quartz Halogen500w. 240v. For outdoor lamps £1.00

Sean to Scan Leads

11/2 metres £2.00

TX 100 FST ChassisLOPT No 260482

£5 Post

Philips )

Text Decoder K40

ICCS Tube Base on panelICC5 Decoder panel

Amstrad -Long Chassis£8.00 and short Chassis

Power supply

each £5.00

KT3/k30 T/Text £12.50KT3K30 Full Remote £15.00Pye & Philips handsetKT3-K30 chassisNo. RC5150-RC5176-RC5071-RC5177.Special Price £13.00RC4001 KT3 and Teletex £14.00TXIO Hand Set Text £12.50TX9 with Text £12.50TX9 & TX 10 button print £1.00TX 10 Focus Pots £5.50

£20.00 Mains Stand By Switch with Coil £1.00

Sharp Tuner & IF1810587 PALI UK £3.00

Tuner IF UE30-130 3Amstrad

Nicam BoardsTexas Instfuments Mk11

Toshiba Nicam Board

Models 1991/1992£4.00

BU 208ABU 508ABU 508DBU 508AFBU 508DFBU 808DFBU 801

2SD 1398

2SD 1428

2SD 15562SD 1844

£1.00

£1.00

£1.00

HANDSETSAmstrad ExportAmstrad U/VAmstrad 6800Amstrad 6000Amstrad 4700Amstrad 4600

£3.00£3.00

£4.00

£15.00

£5.00

£3.00

£1.00 10081 GEC£1.00

£3.00

£1.00 FERGUSON60P BSB

£1.00 ICC5IK2000

£1,00 I K7000

£1.00 SRD 2

£1.00 SRD 3SRD 4

TDA 2600 £1.50

TX9O Mains Transformer

Hand sets£1.50

£5.00£5.00£5.00

£1.00£1.00

£1.00

PANASONIC TV Video Handset1993 models with door -£10.003 types

£15.00TDA 3560TDA 3654

£6.00

£3.00Ferguson Nicam Board

10 Mixed Tube Bases

All New Types

£15.00

£100 Text -Type

Replace Hand Set for Philips KT3-K30.K4 etc £8.00SFE 6 Meg. Filter

CDA 6 MHz FilterSFE 5.5 MHz Filter455 Filters480 Filters

25p

25p

25p25p

25p

TunersU/V 615U/V 616

10.011 each

TunersNat. Pan. Small(111F/VIIF

Thorn Handsets9000-9600-TX9-TX I 0-TX100Text and NonText

TDA 3653AQTDA 3562A

£7.00 each

£2.00IRION Hand set

90pLCD Video Easy Programmer £10.00

£1.00RCIS £3.00

£1.00

STR 4211

STR 64120

STR 6602D

PHILIPS£6.00

U/V Handset TV/VCR/TXT£6.00

Remote RC 5903£4.00

01 M4 -412 -001 -RU I

8 WayPre sets for TX10-TX100

£10.00 01 V6-251-002

Text Panel ICCSFerguson

Philips RC5I71 (Handset) £8.00

Sasso Nlagnatronlv lie 2M2I8H £10.00

£3.00 B.Sky.B VHF to IFBlock Converter £1.00

U321 - U341 - U342 - 0343 - U344Tuners each £5.00 10 Panels Ferguson

Mixed from TX9 to ICC5

U 411 Tuner

U 412£5.00 each

LNB'S MARCONIEx Rental Black Cap

No Guarantee£3.00

Bridge Rectifiers 10 for £1.00

Matsumi Miniature Infra RedReceiver

£12.00

ORIONVideo RC44

£3.00 Video RCO7

LCD-RCL

£10.00

Philips HandsetsRC 5353

RC5300

RC 5176

RC5177

£8.00

each

Philips 36832 2A LOPT.

Hand set£3.00£3.00

£10.0(1

PANASONIC -TV

Handsets for models:TCI632, TCI 642, TC2232TX2034, TX2044, TX2200TX2234, TX2244, TX230(tTX2636, TX3300. RC20 Ireplaces TNC11411/2

£8.00 each

Original

05.00 TOSHIBACT 9511

£20.00 2433274 LOPT £12.00

TV Aerial Ring Type 40p Line TransformersGreen Spot

TX100 Remote !land SetsWhite Spot £12.00

£6.00Blue Spot eachYellow Spot

ITT -Nokia Tuner IFRF-1F-Module 582_902 58 £6.00

SEL-ITT HF-Module 2

£1.00UK 5828-04-10

Turntahle Satelite Modulator TVSound 5.5 MHz MPM 1000TSound 6.0 MHz MPM 1040

£1.00£1.00£1.00

FEROXRF Filter Clamp for Coax Cable £2.50Circuit for detecting R.F. Send for Circuitusing clamp 25p each

Ferguson Switch Mode TransformerTX85.TX86. TX 1011 each £3.50

ICC5 Ferguson Switch Mod Trans 3112-338-31642 £4.00

1.2v DC and 24v DC poNk i supply

regulated £2.00

FERGUSON

KT3-K3(( Tripler £5.00

£6.00 U/V Tripler £4.01)

Amstrad -Double Decker Switch Mode Grundig Tripler with Focus PotPOWER SUPPLY £5.00

Amstrad Double Decker PanelsDOUBLE DECKER FRONT 8900 £5.00Front with flaps £1.00 PERIM PV 1188 Hand sets £3.00

BG 2087-642-10415 'friplers

BG 2032-642-3002

Hand sets£5.00

CT 9234CT 9455

CT 2233CT 938

CT 9268ACT 9384

CT 9194

CT 9296

CT 9186

CT 9187A

£3.00 each

Hand sets

AMSTRAD Long Chassis£7.00 Display Panel 1992/1993 £4.00

£7.00 Amstrad Tuner UE33-1301£7.00

SENDZ COMPONENTS63 BISHOPSTEIGNTON, SHOEBURYNESS, ESSEX SS3 8AF

NORMALLY SAME DAY SERVICE SUBJECT TO AVAILABILITYNo accounts Technical information by telephone only No credit cardsUnless specified add £1.70 PIP to small orders Additional charges forheavier items Specific P/P charges are PER ITEM For UK addresses

please add PIP TO ORDER THEN 17V2% VAT TO TOTAL This applies for theEC unless VAT No. is given EXPORTS - PIP at cost

Postal Order/Cheque with order.Callers to shop - 212 London Road, Southend Open 9.30-1, 2.15-5.

Tel: 0702 332992 Fax: 0702 338805 GVIVIT School orders on official headings

£3.00

TX10 Focus Units 6 for £10.00

Conversion Kit ITT Teletext £8.00

Burglar Alarm Siren 12 Volt 50p

Amstrad 6000 Head withmotor LPGood Lower Drum

£10.00£3.041

SEND FOR "SECTIfI5Please send SA

SERVICINGVIDEOSATELLITEDEVELOPMENTS ......KA2209 KA2210 KA2212 KA2213 125p 230p 80p 130p VOLTAGE...

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Transcript of SERVICINGVIDEOSATELLITEDEVELOPMENTS ......KA2209 KA2210 KA2212 KA2213 125p 230p 80p 130p VOLTAGE...